9 6 Let U be an n × 1 vector with 1 as its

9.6 Let U be an n x 1 vector with 1 as its first element and 0s elsewhere.
Consider computing the regression of U on an n x p’ full rank matrix X.
As usual, let H = X(X’X)‘1X’ be the hat matrix with elements 11,].
9.6.1 Show that the elements of the vector of fitted values from the
regression of U on X are the h, j = l, 2, . . ., 11.
9.6.2 Show that the first element of the vector of residuals is l — h, and
the other elements are 411,-, j gt; 1.
Statistics and Probability

Find the zscore(s) for which 90%

of the distribution’s area lies between -z and

Question

Find the z-score(s) for which 90% of the distribution’s area lies between -z and

z. (Round answer to the nearest thousandths and use a comma to separate answers as necessary.) (Do not place a space in between your answers!)

Statistics and Probability

Please answer the following questions based on the reading

(Demmer RT, Zuk AM, Rosenbaum M, Desvarieux M.
1 Diabetes Prevalence
Name
Institution Affiliation 2 1. What is the research question (aim of the research)?
The aim of the study is to estimate the prevalent rate of undiagnosed and diagnosed…
Statistics and Probability

Question Final Shot

John Diggle needs to give up his trusted Glock for a more

Question

Stun Gun (cm):

4.9

14.1

7

7.2

5.4

8.6

are the conditions for the problem met?

All the conditions of the Problem are wet.
For Glock ( 2 ) : –
His togvamy
class
Frequency
5 – 10
14
10 – 115
15 – 20
T
6
5 10 15 20
It is positively skewed
For Stun Gunlu) quot; –
Histogram…
Statistics and Probability

A marketresearch firm was hired to determne the percentage of people in a market area who would purchase a

Question

A market-research firm was hired to determne the percentage of people in a market area who would purchase a

client’s magazine if a door-todoor sales campaign were undertaken. The firm stated that 40% would buy if contacted at home. If the marketing company tried the sales campaign at 300 randomly selected homes and assuming the market research was done properly and the 40% is reprensatitive how many sales are expected if the publisher attempts to sell to 5,000 homes?

If the market research was accurate what is the probablity that fewer than 100 individuals will buy? use the approximation to the binomial.

Suppose that the publisher actually sells the magazine to 70 people out of the 300 contacted.What would you conclude about the market research? About the campaign?

Statistics and Probability

Please assist with problem below Give an example of a problem dealing with two possibly

Question

Please assist with problem below.

Give an example of a problem dealing with two possibly

related variables (Y and X) for which a linear regression model would not be appropriate. For example, the relationship could be curved instead of linear, or there may be no significant correlation at all.

What is the impact of using a linear regression model in this case? What options, other than linear regression, can you see? You do not need to collect any data.

Statistics and Probability

How are these done using Excel?

1.

Consider a finite population with 5 elements

Question

How are these done using Excel?

1. Consider a finite population with 5 elements

labeled A, B, C, D and E. 10 possible simple random samples of size 2 can be selected.

a. List the 10 samples beginning with AB, AC, and so on.

b. Using simple random sampling, what is the probability that each sample of size 2 is selected?

2. In order to estimate the average electric usage per month, a sample of 196 houses was selected and the electric usage determined.

a. Assume a population standard deviation of 350 kilowatt hours. Determine the standard error of the mean for the following.

b. With a 0.95 probability, determine the margin of error.

c. If the sample mean is 2,000 KWH, what is the 95% confidence interval estimate of the population mean?

3. A researcher is testing a new painkiller that claims to relieve pain in less than 15 minutes, on average. What’s would be the hypotheses associated with the researcher’s test.

4. At a certain manufacturing plant, a machine produced ball bearings that should have a diameter of 0.50 mm. If the machine produces ball bearings that are either too small or too large, the ball bearings must be scrapped. Every hour, a quality control manager takes a random sample of 30 ball bearings to test to see if the process is out of control (i.e. to test to see if the average diameter differs from 0.50 mm).

a. State the hypotheses associated with the manager’s test.

b. Describe a Type I error for this situation.

c. Describe a Type II error for this situation.

Assist for a better understanding of below It is estimated 30% of all adults in United States

Question

Assist for a better understanding of below:

It is estimated 30% of all adults in United States

invest in stocks and that 84% of U.S. adults have investments in fixed income instruments (savings accounts, bonds, etc.). It is also estimated that 26% of U.S. adults have investments in both stocks and fixed income instruments.

Statistics and Probability

A financial analyst for a bank wants to analyze the relationship between customer’s credit scores and

Question

A financial analyst for a bank wants to analyze the relationship between customer’s credit scores and

home-ownership. She suspects that renters have on average lower credit scores than home owners, and that credit scores improve over the time that customers live in their current residence. A linear regression model with these two variables confirms her suspicions. However, she now wonders whether the time lived at current residence equally affects home owners and renters. To answer this question, which variable (or variables) should the analyst include in her regression model?

a.dummy variables for the renters who have lived in their current residence the longest
Statistics and Probability

FOR NEXT 3 QUESTIONS USE THE FOLLOWING DIRECTION Manager of a grocery store wants to test to determine whether or

Question

FOR NEXT 3 QUESTIONS USE THE FOLLOWING DIRECTION: Manager of a grocery store wants to test to determine whether or

not the mean waiting time of its customers is significantly more than 4 minutes. He takes a random sample of 36 customers and finds that the average length of time it took the customers in the sample to check out was 4.6 minutes. A national study estimates that standard deviation of length of time of grocery store customers is 1.8 minutes. What is the computed value of test statistics for this study?

1.96

1.64

2.00

0.056

None of the above

Flag this Question

Question 39

2.5 pts

The P-value of this study is

between 0.005 to 0.01

0.01

0.025

0.0228

0.9772

Flag this Question

Question 40

2.5 pts

At 5% level of significance, it can be concluded that the mean of the population is

significantly greater than 4

not significantly greater than 4

significantly less than 4

significantly less than 4.6

Statistics and Probability

Preston an official for a state’s department of safety wants to show that the population mean speed of passenger

Question

Preston, an official for a state’s department of safety, wants to show that the population mean speed of passenger

vehicles traveling on a certain expressway is greater than the posted speed limit of 65mph. Preston collects a random sample of 59 passenger vehicles traveling on the expressway and finds that the sample mean speed is 67.1mph

with a sample standard deviation of 7.5mph. The test statistic t for a hypothesis test of H0:μ=65 versus Ha:μ65 is t≈2.15

with 58 degrees of freedom. If 0.01p-value0.025 and the level of significance is α=0.10, which of the following statements are accurate for this hypothesis test to evaluate the claim that the true population mean speed of passenger vehicles traveling on the expressway is greater than 65mph?

Statistics and Probability

Problem Set 1 Pearson Correlation Coefficient AnalysisResearch Scenario

Question

Problem Set 1: Pearson Correlation Coefficient Analysis

Research Scenario:

A clinical psychologist would like to determine whether there is a relationship between observer ratings of children’s externalizing behaviors and scores on an established diagnostic interview assessing externalizing disorders (like ADHD, CD, etc.). He administers the diagnostic interview to 25 children and records these scores. He then trains an observer to independently rate carefully-defined externalizing behaviors for each of the 25 children. These scores are totaled for an overall externalizing behavior index. On both the interview and the behavioral ratings, a higher score indicates higher levels of externalizing behavior. These scores are listed in the table below.

Using this table, enter the data into a new SPSS data file and run a Pearson correlation coefficient analysis to test whether there is a relationship between the interview scores and the behavior ratings in this sample. scatterplot to show the relationship between the variables.

  1. Paste SPSS output.
  2. Results section based on your analysis including independent and dependent variables, confidence interval, effect size, 1 or 2 tailed and the p value.

Problem Set 2: Pearson Correlation Coefficient Analysis

Research Scenario: A social worker involved in suicide prevention efforts wants to study the relationship between social isolation and possible suicide risk. She collects scores from a sample of 13 patients on two measures: one is a measure of social isolation on which higher scores indicate higher isolation (possible range of scores = 0- 20), and the other is the Suicide Risk Scale (SRS, Plutchik et al., 1989), on which higher scores indicate a higher risk of suicide (possible range of scores = 0-15). These scores are listed in the table below.

Using this table, enter the data into a new SPSS data file and run a Pearson correlation coefficient analysis to test whether there is a relationship between social isolation and possible suicide risk. scatterplot to show the relationship between the variables.

Interview (Range 0
to 9)
Externalizing Behavior Index
(Range 0 to 25)
7
9
6
9
22
20
IN A WOOD
12
10
9
-JU
16
19
21
22
4
7
7
3
13
19
16
12
9
Statistics and Probability

I am having trouble with this question Can anyone help me fine some articles related this? 1

Question

I am having trouble with this question. Can anyone help me fine some articles related this?

1.

Take a look at the article by Cryer (link below). It is an old article that listed the deficiencies of using Excel as a statistical software. However, Microsoft has fixed many of these problems in the latest version of Excel.

Find on the internet an article that discusses the pros and cons (advantages and disadvantages) of using Microsoft Excel for statistical analysis. the link, and the title.

https://drive.google.com/file/d/1e9w-0EOn-4dn7qsSdy3tQzMYIX11ND1r/view?usp=sharing

Statistics and Probability

N people put their phones in a bowl and each one takes a phone at random What is the

Question

N people put their phones in a bowl, and each one takes a phone at random.

What is the

probability that nobody takes their own phone in the limit as N →∞?

(You do not need to compute the probabilities numerically in this problem, but the derivation of your final expression should be clear.)

Statistics and Probability

(What best describes the question bellow)Question 1 Two 95% mean confidence intervals indicate a

Question

(What best describes the question bellow)

Question 1: Two 95% mean confidence intervals indicate a

difference between means at less than the alpha = .01 level when:

-The endpoints do not touch

-The endpoints just barely overlap

-The endpoints overlap by about 25% of their range

-We cannot use single mean confidence intervals to determine differences.

Statistics and Probability

A group of students with normally distributed salaries earn an

average
of
$6,800 with a
standard

Question

A group of students with normally distributed salaries earn an average of $6,800 with a standard

deviation of $2,500

Find the cutoff for the salary that corresponds to the lower 25% of all salaries. Use Excel, and round your answer to the nearest integer.

Please help! i know the mean is 6800 and the SD is 2500 but am totally lost after this!

Provide your answer below:

Statistics and Probability

1 Cort Industries owns assets that will have​ a(n) 75 % probability of having a market value of $ 58 million one

Question

1.cort Industries owns assets that will have​ a(n) 75 % probability of having a market value of $ 58 million one

year from now. There is a 25 % chance that the assets will be worth only $ 28 million. The current​ risk-free rate is 2 %​, and​ Acort’s assets have a cost of capital of 4 %. a. If Acort is​ unlevered, what is the current market value of its​ equity? b. Suppose instead that Acort has debt with a face value of $ 26 million due in one year. According to​ MM, what is the value of​ Acort’s equity in this​ case? c. What is the expected return of​ Acort’s equity without​ leverage? What is the expected return of​ Acort’s equity with​ leverage? d. What is the lowest possible realized return of​ Acort’s equity with and without​ leverage?

2.Hartford Mining has 60 million shares that are currently trading for $ 3 per share and $ 70 million worth of debt. The debt is risk free and has an interest rate of 5 %​, and the expected return of Hartford stock is 11 %. Suppose a mining strike causes the price of Hartford stock to fall 20 % to $ 2.40 per share. The value of the​ risk-free debt is unchanged. Assuming there are no taxes and the risk​ (unlevered beta) of​ Hartford’s assets is​ unchanged, what happens to​ Hartford’s equity cost of​ capital?

A
2
a) If Acort is unlevered, what is the current market value of its equity?
million
4
equity value of assest= (75% x 58)+(25% x 28)
50.5
5
expected curant market value
50.5
6
cost of capital of =…
Finance

4 points

Question 2

  1. Which of the following can be reduced by proper interviewer

Question 1
1. Which of the following is most likely a population as opposed to a sample?
2. respondents to a newspaper survey
3. the first 5 students completing an assignment
4. every third person…
Statistics and Probability

Hello I need help with the following math problem Can you please show solution ? Question

Question

Hello , I need help with the following math problem. Can you please show solution ?

Question

1

Solve the problem. A sprinkler rotates 360° to water a circular region. If the total area watered is approximately 2,200 yd 2 determine the radius of the region (the radius is length of the stream of water). Round the answer to the nearest yard.

Question 2

Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial.

Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial

t2 -13/4t + N

Statistics and Probability

If we have two group means to compare we use a z or t test as we have seen assuming we can meet the assumptions

Question

If we have two group means to compare, we use a z or t test as we have seen, assuming we can meet the assumptions

of a parametric test. If we have three or more group means to compare, we would have to do multiple z or t tests, but this is just not feasible, and multiple tests would increase our probability of type 1 error. So we use ANOVA. ANOVA uses the F ratio (a ratio of Variances) to inform us on any differences among group means. Discuss.

How do you interpret the ANOVA table in Checkpoint 4?

Statistics and Probability

Talking about sample size Which of the following is needed for a sample size

Question

Talking about sample size,

Which of the following is needed for a sample size

calculation?

a. What variable you will measure

b. Desired potential for a Type 1 error

c. Knowing if it will be a random sample

d. The size of the population from which you will collect your random sample

Which of the following is true about sample size?
Statistics and Probability

Problem Set 4 Research Scenario A community psychologist is interested

Question

Problem Set 4:

Research Scenario: A community psychologist is interested

in whether spending time in after-school programs is predictive of the number of arrests as a young adult in a high-risk neighborhood. After collecting records on 17 individuals over 8 years, she compiles the information listed in the table below. Does the time spent in after school programs predict the number of arrests after age 17?

Using this table, enter the data into a new SPSS data file. Use the appropriate test to analyze the question and the appropriate graph.

  1. Paste SPSS output.
  2. Results section based on your analysis including independent and dependent variables, confidence interval, effect size, 1 or 2 tailed and the p value.

Problem Set 5:

Research Scenario: An addictions counselor is compiling data on the main substance used by each of his 23 clients before treatment. Based on the admissions data he has, he divides the substances into three main categories: Alcohol, Opioids, and Cocaine/Crack Cocaine. He records the number of clients in each category based on their reports of which substance they primarily used before seeking treatment. The frequencies are listed in the table below. Is the number of clients spread equally across the three types of substances?

Using this table, enter the data into a new SPSS data file. Use the appropriate test to analyze the question and the appropriate graph.

Problem Set 5:

Research Scenario: An addictions counselor is compiling data on the main substance used by each of his 23 clients before treatment. Based on the admissions data he has, he divides the substances into three main categories: Alcohol, Opioids, and Cocaine/Crack Cocaine. He records the number of clients in each category based on their reports of which substance they primarily used before seeking treatment. The frequencies are listed in the table below. Is the number of clients spread equally across the three types of substances?

Using this table, enter the data into a new SPSS data file. Use the appropriate test to analyze the question and the appropriate graph.

  1. Paste SPSS output.
  2. Results section based on your analysis including independent and dependent variables, confidence interval, effect size, 1 or 2 tailed and the p value.

Statistics and Probability

As you continue to help Ima at Getta Byte Consider the following questions for the Getta Bill project How should

Question

As you continue to help Ima at Getta Byte, Consider the following questions for the Getta Bill project. How should

the risks be prioritized? Who should do the prioritization of the project risks? How should project risks be monitored and controlled? Who should develop risk responses and contingency plans? Who should own these responses and plans?

Transcript

Getta Byte Software Risk Management We need a risk management plan for our project. We are meeting to brainstorm what the risks could be. I don’t like talking about risks. It makes them come true. No, it doesn’t. It helps us decide what to do if something goes wrong. Network capacity could be a problem during data transfer. Great start! Let me get it into the risk register. Let’s think about a possible response to avoid, mitigate, transfer, or accept these risks. We still need to do qualitative analysis to decide probability and impact. Not today, my brain hurts. The end

Project Management

Find Pr{N(t)&gt

=k} is a renewal process having lifetime density

f(x)= rho*exp^(-rho(x-delta)), for x

Finding Pr{N(t)gt;=k}, and it is a renewal process having lifetime density
We know P(N(t) = k) = Fk(t) − Fk+1(t)
where f(x) = rho * exp(-rho 9x-delta)) /x/ ≤ 1 or Fk(t) = P[Sk ≤ t] and Sk =…
Statistics and Probability

A management consulting team needs a team of four to analyze the operations of a new client The team should

Question

A management consulting team needs a team of four to analyze the operations of a new client. The team should

comprise an accountant, a production specialist, a finance specialist, and a management specialist. On its staff, the consulting firm has available six accountants, five production specialists, three finance specialists, and eight management specialists. How many different teams could be formed from the available individuals

Statistics and Probability

Question 1Suppose that each individual in a large insurance portfolio

Question

Question 1

Suppose that each individual in a large insurance portfolio

incurs losses according to an exponential distribution with mean (1/ λ), where λ varies over the portfolio according to a G(α, δ) mixing distribution. The respective densities of the two distributions are given by:

(a) Show that the marginal distribution of losses follows a Pareto distribution, i.e. P(α, δ)

(b) Use the mixing formulation of the Pareto to deduce that if X~P(α, δ), then E(X) = α / (δ – 1)

Statistics and Probability

Course for micro econ and I am not so good with uncertainty

1. A wage earner, Mister T, with initial wealth to = $1600, has a Bernoulli utility
function u(:r) = fl. His monthly wage amounts to $2000. He can be sacked
with probability 0.2. An insurance company designs an insurance contract against
unemployment. If Mister T pays an insurance premium of $156, he will receive
$1056 if he is sacked. There are only two periods: a first one at which decisions are
taken and a second one at which all uncertainty is resolved. Assume that Mister T’s preferences satisfy the conditions of the expected utility theorem. (a) Does Mr. T decide to insure himself against unemployment? (b) Supposing that the insurance premium is $156, what is the minimum amount
of money that the insurance company must disburse to Mr. T in case of unemployment, if it wants Mr. T to buy a contract?
Economics

1 The drug Plavix requires the enzyme CYP2C19 to take it from the prodrug form to the drug form (enzyme A

Question

1, The drug Plavix requires the enzyme CYP2C19 to take it from the prodrug form to the drug form (enzyme A

below) and it requires the enzyme CES1 to convert it from active to inactive (enzyme 1 below). The active form of the drug is effective in preventing blood clots but is toxic in higher doses. Individuals with a mutation in this CES1 gene produce a version of CES1 that is not functional. You are a physician trying to determine the dosage of Plavix for a patient who is homozygous for the mutated version of the gene. What should you do?

  • Decrease the normal dosage because they are making too much of the drug
  • Increase the normal dosage because they are making too much of the toxic endproduct
  • Increase the normal dosage because they are not making enough of the toxic endproduct
  • (Choose another drug as the individual will likely suffer from too much toxicity? my guess)

2, In pea plants, yellow peas (Y) are dominant to green (y) and round peas (R) are dominant to wrinkled (r). Two pea plants were crossed, one with yellow round peas and one with green wrinkled peas. What were the genotypes of the parents?

  • The yellow round was YYRR and the green wrinkled was yyrr
  • The yellow round was YyRr and the green wrinkled was YyRr
  • The yellow round was yyrr and the green wrinkled was YYRR
  • The yellow round was YYrr and the green wrinkled was yyRR

3, When Mendel crossed a plant with smooth green peas and a plant with wrinkled yellow peas, what did he find?

  • Color and shape of pea are linked (if you have a smooth pea it has to be green)
  • Color and shape of pea are not linked (if you have a smooth pea, it can be green or yellow)
  • Only yellow peas produce leaves
  • Only smooth peas produce leaves

4, A cross is performed between a plant with genotype TtYy and a plant with genotype Ttyy. T refers to height (tall) and Y refers to color (yellow or white). If the two genes independently assort, what is the probability, expressed as a percent, that the offspring will be heterozygous for the height gene?

Science

Hi!

I attached the questions that I need answered.

I need the work shown or any explanations stated.

Could

STAT 200 Final Examination Spring 2016 OL1/US1 Page 1 of 11 STAT 200 Introduction to Statistics Name______________________________ Final Examination: Spring 2016 OL1 / US1 Instructor…

Statistics and Probability

The following sample data sets Find the appropriate center of the data (mean or median) and the appropriate

Question

the following sample data sets. Find the appropriate center of the data (mean or median) and the appropriate

measure of variability (standard deviation or interquartile range). Explain why you chose these measures. Describe the shape of the data distribution and explain why you chose that shape. Include any information that will help your readers understand or visualize your data set.

DATA SET B 302.4 262.8 255.6 214.2 230.4 345.6 237.6 253.8 370.8 333.0 271.8 266.4 280.8 271.8 358.2 354.6 228.6 302.4 270.0 266.4 361.8 273.6 252.0 307.8 295.2 297.0 313.2 295.2 183.6 320.4 252.0 279.0 304.2 289.8 280.8 372.6 288.0 289.8 320.4 288.0

R
S
W X
Z
AA
AB AC AD
AE
B
C
D
E
G
H
K
O
Q
1
302.4
183.6
Bin
Frequency
Histogram
262.8
mean
214.2
180
0
3
255.6
288.5
AVERAGE(A1:A40)
228.6
190
214.2
230.4
200
0
230.4
median
237.6
210
0 –
345.6…
Statistics and Probability

An analyst has been studying a particular stock and has come to the following two conclusions the

Question

An analyst has been studying a particular stock and has come to the following two conclusions:

  • the

probability that the stock will rise on a particular day is 0.3

  • the rise or fall of the stock on any particular day is independent of the rise and fall of the stock on any other day
  • Calculate the probability that over the next week (7 days) the number of days that the stock will rise is not 3. Give your answer as a decimal to 2 decimal places.

    Probability =

    [1 mark]-
    Statistics and Probability

    Suppose researchers are interested in a program that is intended to reduce overall calorie intake in a group of

    Question

    Suppose researchers are interested in a program that is intended to reduce overall calorie intake in a group of

    women looking to lose weight after pregnancy. The program manager sets a daily calorie intake limit of 2,050calories/day. Which of the following represents the null and alternative hypotheses representing a two-sided one sample t-test for the average calorie consumption in the weight management program?

    Statistics and Probability

    Hi I need help with this answer in Excel The Laurenster Corporation is

    Question

    Hi,

    I need help with this answer in Excel.

    The Laurenster Corporation is

    getting into the construction business. A list of activities and their optimistic, most likely, and pessimistic completion times are given in the following table for the next construction project.

    (a) Develop a project network for this problem. (b) Determine the expected duration and variance for each activity.

    (c) Determine the ES, EF, LS, LF, and slack time for each activity. Also determine the total project completion time and critical path(s).

    (d) What is the probability that this job will finish in 38 days or less?

    Math

    Question 11 A researcher wants to construct a 99% confidence interval for the proportion

    Question

    Question 11

    A researcher wants to construct a 99% confidence interval for the proportion

    of people who changed jobs in the past year. What sample size is needed so that the confidence interval will have a margin of error of 0.042 ?

    Write only an integer as your answer.

    Question 13

    Consider the following hypotheses:

    H0: mean = 7

    H1: mean 7

    A test is performed with a sample of size 36. The sample mean was 2.50 and the population standard deviation is 18. Assume that the population is approximately normal. Use the TI-84 PLUS calculator to compute the P-value.

    Round your answer to four decimal places (for example: 0.0138). Write only a number as your answer.

    Statistics and Probability

    1 ) Because the

    QQ Plot
    shows most
    With more and more students utilizing bus service, especially during the colder months, it is pertinent to reduce the wait times for students. A local high
    school’s Bus Route 65 has a posted pick up time for Stop 1 on the route, at the corner of Ave B and 56th Street, to be 7:03 am. The bus cannot be
    there any earlier than 7:03 am, or students will not be ready. The rest of the stops are dependent upon this Stop 1’s timing, so a bus driver is asked to
    record the time (in minutes and seconds) that they were at Stop 1, and the administration will pick a random sample of 19 of the days to analyse. The
    data will be recorded as minutes waiting after the 7:03 am posted time, and may include decimals for precision.
    The administration will take action if it is likely that the population mean number of minutes waiting after 7:03 am at Stop 1 on Bus Route 65 is greater
    than 3 minutes. That is, they will test these hypotheses at a 5% level:
    Ho : H = 3 minutes
    Ha: H gt; 3 minutes
    Statistics and Probability

    A sociologist is interested in the relation between x = number of job changes and y = annual

    Question

    Interpretation

    For each less job change, the annual salary increases by an amount that falls outside the confidence interval.

    For each less job change, the annual salary increases by an amount that falls within the confidence interval.

    For each additional job change, the annual salary increases by an amount that falls within the confidence interval.

    For each additional job change, the annual salary increases by an amount that falls outside the confidence interval.

    Statistics and Probability

    HiPlease help me answer this question on regression

    The more simple and straightforward the response ,
    Suppose I want to predict the sales of Café Coffee Day in the next month. My dependent
    variable is sales of Café Coffee Day. Independent variables are customer satisfaction ratings and
    service…
    Statistics and Probability

    I need complete solutions for my statistic assignment Please see attached

    ;

    Question

    I need complete solutions for my statistic assignment. Please see attached

    Math 12
    Chapters 6-9 Worksheet
    Read each question carefully and follow all instructions exactly. Correct
    answers without adequate supporting work will not receive full credit,
    so show work whenever…
    Statistics and Probability

    Hi I have a homework question that I just don’t think I have the formula right Question

    Question

    Question:

    The logistic equation is commonly used to model growth phenomena in biological populations: Y = (L/(1+e^-a(x-b)), where Y is the response, x is the input, L, a, and b are constants. Assume that L is given as L0, find the least squares estimations of a and b.

    If L0 it can be treated as a constant. So we are looking for P(a) and P(b). I was trying to write the bottom part taking the reciprocal of the negative exponential making it Y= L(1+e^a(x-b)). Then multiplying everything by the log, making Y = ln(L) (1+(ln(a))(ln(x-b)). But i don’t know if this is the right step or even what formula to apply to get Probability of a or b.

    Statistics and Probability

    Need help with understanding questions 1625 Thanks

    Question

    Need help with understanding questions 16-25.Thanks

    Question 16:
    a) In this case we need to select 12 items from 19 items where the order does not matter so
    we need to use the approach of combination.
    Thus required number of ways = 19C12 = 50388
    b)…
    Statistics and Probability

    True or false 1 A utility curve that shows utility increasing at an increasing rate

    Question

    True or false:

    1- A utility curve that shows utility increasing at an increasing rate

    as the monetary value increases represents the utility curve of a risk seeker

    2- A seasonal index must be between -1 and +1

    3- Utility theory provides a decision criterion that is superior to the EMV or EOL in that it may allow the decision maker to incorporate her own attitudes toward risk

    4- The SSE measures the total variability in the independent variable about the regression line.

    5- The Delphi method solicits input from customers or potential customers regarding their future purchasing plans

    6- When using the EOL as a decision criterion, the best decision is the alternative with the largest EOL value.

    7- Any time that we have an isoprofit line that is parallel to a constraint, we have the possibility of multiple solutions

    Statistics and Probability

    Can someone answer the following problems below and show work 1

    The average

    Question

    Which of the above two problems (a) or (b) requires application of the Central Limit Theorem? Explain your reasoning.

    4. Assume that the mean diastolic blood pressure of normal adults is 80 millimeters of mercury (mm Hg) with a standard deviation of 4.8 mm Hg. Assume that the variable is normally distributed. If a sample of 30 adults is randomly selected, find the probability that the sample mean will be between 80 and 81.4 mm Hg.

    Statistics and Probability

    I need an expert in Business Analysis (Stat) college lvl 300 with these 5 problems and also who can work with me

    Question

    I need an expert in Business Analysis (Stat) college lvl 300 with these 5 problems and also who can work with me

    further later.

    There is only one attempt to submit and score this assignment. If I cant get 100% in the first time, payment can not be processed.

    I also want to know how long will it take to solve these problems. Thank you !

    BUS310 1. A random sample of 25 observations was taken from a normally distributed population. The
    average in the sample was 84.6 with a variance of 400.
    a. Construct a 90% confidence interval for…
    Statistics and Probability

    This is about a statistical computing problem Can some

    Question

    This is about a statistical computing problem. Can some

    solve this? Coding in R is preferred.

    7) Given a probability distribution F and a point x 6 Rd, at depth Mam D measures . ‘ _ d
    how close x is to the center of the distribution and defines a rank order on pomt-S m R with respect to F. Observations which are far from the center of the data are given low ranks, whereas observations close to the center receive higher ranks. The Mahalano‘ois
    depth MD; F) of a vector is with respect to a distribution function F with mean vector
    piF and dispersion matrix 2;: is defined to be MD(t; F) = [1 + it — #F)’231(t — tell—1- The sample version is computed by plugging in estimated ftp and $1.1. 0 5.. Write a program to generate a sample of size n from a bivariate normal distribution
    (F) with mean up = (O, 0), unit variances and Correlation 0.5. If you code in R1 see the function mahalanobis(x, center, cov). Let n = 10. Print the observations, their
    mean and covariance, and the depth of each data point. Find and print the bivariate median; i.e. the bivariate vector that maximizes the depth function. e b. Generate n = 1000 bivariate observations from F. Plot all observations and identify the lowest 5 percent of the data in red.
    Statistics and Probability

    The following 3 questions (Q10 to Q12) are based on the following information John has the phone numbers of

    Question

    The following 3 questions (Q10 to Q12) are based on the following information:

    John has the phone numbers of

    many young ladies. Some of these young ladies are

    blonde and others are brunettes. In addition, John knows that some are single while others have

    boyfriends. The exact breakdown is as follows:

    Blonde Brunette

    Single 15 18

    Taken 10 12

    Find the following probabilities:

    Q10: What is the probability of selecting someone who is taken, given that they are blonde?

    Q11: What is the probability of selecting a single brunette?

    Q12: What is the probability of selecting someone who is brunette, given that they are taken?

    Q13: A coin is tossed four times. Which of the following sequences of heads (H) and tails(T) is

    more likely?

    A. HTHT

    B. HHHT

    C. THHH

    D. TTTT

    E. all are equally likely

    F. none of the above

    Q14: If an event can occur twice out of every 10 times, it has the probability value of

    A. 0.10

    B. 0.20

    C. 0.50

    D. none of the above three answers are correct

    Q15: Probabilities are expressed with what values?

    A. negative infinity to positive infinity

    B. 0.00 to positive infinity

    C. 0.00 to +1.00

    D. -1.00 to +1.00

    Statistics and Probability

    A real estate agent claims that the mean living area of all singlefamily homes in his country is at least 2400

    Question

    A real estate agent claims that the mean living area of all single-family homes in his country is at least 2400

    square feet. A random sample of 50 such homes selected from this country produced the mean living area of 2540 square feet and a standard deviation of 472 square feet.

    a. Using a significance level of 5%, can you conclude that the real estate agent’s claim is true? Use a diagram and show the 5-step method.

    b. What would be the probability of committing a Type I Error in this case?

    Statistics and Probability

    1 A bag contains blue and red balls Two balls are drawn randomly without replacement The probability of

    Question

    1. A bag contains blue and red balls. Two balls are drawn randomly without replacement. The probability of

    selecting a blue and then a red ball is 0.2. The probability of selecting a blue ball in the first draw is 0.5. What is the probability of drawing a red ball, given that the first ball drawn was blue?
    a) 0.4
    b) 0.2
    c) 0.1
    d) 0.5

    2. A die is rolled thrice. What is the probability that the sum of the rolls is atleast 5.
    a) 1/216
    b) 1/6
    c) 3/216
    d) 213/216

    Statistics and Probability

    Please i need a faster tutor to give me answers to this

    question paper.

    Question

    please i need a faster tutor to give me answers to this question paper.

    INFERTILITY • • • Infertility is defined as no conception after
    1 year of unprotected intercourse (i.e.,
    without contraception).
    Fecundability, or the monthly probability of
    pregnancy, is…
    Entrepreneurship

    4 The Uris &amp

    Warren Ratings Agency rates bonds on a simplified scale with just three categories: A,

    Question

    4. The Uris Warren Ratings Agency rates bonds on a simplified scale with just three categories: A,

    B,

    and C.T he Professors Pension Fund has all its money invested in two bonds, X and Y , both of which are

    currently rated B. Over the course of the next year the ratings of the bonds may change; the end-of-year

    value (in millions) of each bond depends on its end-of-year rating as in the following table:

    Rating X Value Y Value

    A

    100

    100

    B

    75

    75

    C

    50

    50

    The joint distribution of the end-of-year ratings of the two bonds is given by the following table:

    Y

    A

    B

    C

    A

    0.2

    0.05

    0

    X

    B

    0

    0.4

    0.1

    C

    0

    0.05

    0.2

    (a) Find the probability that bond X will be rated C at the end of one year.

    (b) Find the expected value of the year-end value of bond X.

    (c) The Pension Fund buys an insurance contract that will pay 20 million if either bond is downgraded

    to C.If both bonds are downgraded the contract still pays 20; if neither is downgraded the contract pays

    nothing.F ind the expected value of the payoff of the insurance contract.

    Statistics and Probability

    Can you assist me with the attached document?

    IT consist of probabilities and contingency tables.

    Question

    Can you assist me with the attached document? IT consist of probabilities and contingency tables.

    MGMT 650 Fall 2016 Problem Set 2
    1. Compute these probabilities:
    a. The probability of rolling the number 6 using one die. 1/6
    b. The probability of rolling the number 6 twice in 2 rolls using only…
    Statistics and Probability

    ABC Toys Inc is trying to determine whether to make significant alterations to their best selling product line

    Question

    . ABC Toys Inc. is trying to determine whether to make significant aerations to their best selling product line.

    ABC has hired a marketing research company to perform focus group analysis in order to get a better idea of the demand for the changes The marketing analysis is expected to show a 65% positive outlook and 35% negative outlook. Once they have the analysis, ABC may either adapt the existing product line or make no changes. Final payoffs will depend on market demand – either high or low. If the market analysis is positive and ABC goes with an adapted product line, high demand is expected with a probability of 0.70 and a payoff of $4M. Low demand (probability of 0.30) would resu in a payoff of $2M. However, If no changes are made, high demand is expected with a probability of 0.30 and a payoff of $4.4M. Low demand would resu in a payoff of $3.5M. If the market analysis is negative and ABC goes with an adapted product line, high demand is expected with a probability of 0.40 and a payoff of $4M, low demand would give a payoff of $3.5M. If no changes are made, high demand is expected to have a probability of 0.80 with a payoff of $4.4M and low demand would have a payoff of $2.8.

    Draw a decision tree to illustrate this problem Solve the decision tree and make a recommendation to ABC

    Marketing

    I need help with this homework programs all of them

    ;

    Question

    i need help with this homework programs all of them.

    Problem 1
    a)
    Mean = 6.49 hours
    Standard deviation = 1.05/sqrt(150) = 0.0857 hours
    b)
    Probability of coming up with a sample that they studies 6 hours or less = P ( z amp

    (6 – 6.49)/0.0857 )
    = P(…
    Statistics and Probability

    1 What are nonspherical disturbances? 2 What is panel data? How does it differ from crosssectional

    Question

    1. What are non-spherical disturbances?

    2. What is panel data? How does it differ from cross-sectional

    data?

    3. What is time-series data? How does it differ from cross-sectional data?

    4. Describe the different types of probability models. Under what conditions are they used?

    5. Why must we weight the residuals when analyzing proportions data (with the logit model)?

    1 1. What are non-spherical disturbances?
    In a standard OLS structure, it is presumed that the imminent variances of errors are always
    stable and invariant. In such cases, assuming…
    Economics

    Ina sample of 800

    U.S. adus, 186 dine out at a restaurant more than once per week. Two U.S. adus are selected

    Question

    Ina sample of 800 U.S. adus, 186 dine out at a restaurant more than once per week. Two U.S. adus are selected

    at random from population of all U.S. adus without replacement. Assuming the sample is representative of all U.S. adus, complete parts (a) through (d). a. find the probability that both dine out more than once a week b. find the probability that both dine out more than once per week c. find the probability that at least one of the two dines out more than once per week d. which of the events can be considered unusual

    Statistics and Probability

    S A T Company is ready to launch a new product domestically

    Historically, the companies products have been

    Question

    S.A.T. Company is ready to launch a new product domestically. Historically, the companies products have been

    successful domestically 93% of the time. This new product has been sold overseas for the past 6 months as this has been the traditional market strategy (test a product overseas before bringing it to the domestic market). Historically, products which are successful domestically were successful in the international market 86% of the time. Conversely, products which fail domestically had already failed internationally 92% of the time.

    Determine the probability that this new product will be successful domestically if the product has been successful overseas. Indicate your answer to four decimal places (i.e. 0.0001).

    Statistics and Probability

    Question 4(a) Managers are not always working all the benefits of shareholders Explain what agency

    Question

    Question 4

    (a) Managers are not always working all the benefits of shareholders.

    Explain what agency

    problem is in real world. (6 marks)

    (b) Stock exchanges are the backbone of the capital market.

    Why would a finance manager of a large public listed company issue?

    commercial paper in money market to finance some projects?

    (3 marks)

    (c) Recently, a financial analyst of New York Stock Exchange came up with the

    hypothetical analysis as follows:

    Return from Exchange: 9%

    Probability: 0.1 (Most likely)

    Return from Exchange: 10%

    Probability: 0.2 (likely)

    Return from Exchange: 11%

    Probability: 0.4 (Neutral)

    Return from Exchange: 12%

    Probability: 0.2 (unlikely)

    Return from Exchange: 13%

    Probability: 0.1 (most unlikely)

    Required:

    (i) What is the expected return that could be gained from New York Stock

    Exchange? (3 marks)

    (ii) What is the variance for the return? (4 marks)

    (iii) What is the standard deviation of the return? (4 marks

    Finance

    Due to budget cuts a manager was told to cut a single person out of his work crew of 4 workersDave Joe Mike

    Question

    Due to budget cuts a manager was told to cut a single person out of his work crew of 4 workers-Dave, Joe, Mike,

    and Roger. He decided to make the cut in as fair of way as possible since all are equally qualified. He put each of their names on a card, mixed the cards, and drew a random name. The manager’s best friend is Dave and Dave stated that at least his odds of losing his job are only one out of four-it could be worse, Dave stated. Then Dave asked, At least two of the others-Joe, Mike, and Roger will retain their job; could you tell me randomly the names of the two that will keep their jobs? The manager decided to tell Dave which of the others would keep their jobs, the manager stated, Mike and Roger will keep their jobs…..Dave’s concern set in, he said it seems as if my chances of being terminated just went from ¼ to ½……..

    Is John right in thinking that the probability changed from ¼ to ½? Explain/prove your answer with a decision tree only…..

    Due to budget cuts a manager was told to cut a single person out of his work crew of 4
    workers-Dave, Joe, Mike, and Roger. He decided to make the cut in as fair of way as possible
    since all are…
    Statistics and Probability

    You have a deck of 52 cards divided into 4 suits (spades hearts diamonds &amp

    clubs) each suit consists of 13

    Question

    You have a deck of 52 cards, divided into 4 suits (spades, hearts, diamonds clubs) each suit consists of 13

    cards of different ranks, the spades clubs are black colored while hearts diamonds are red colored.

    You are asked to draw 4 cards without replacement, find the probability of the below

    Statistics and Probability

    64% Of men consider themselves professional baseball fans You randomly select 10 men and ask each if he considers

    Question

    64% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers

    himself a professional baseball fan. Find the probability that the number who considers themselves baseball fans is (a) exactly eight (b)at least eight and (c) less than eight. If possible use technology to find the probabilities.

    n r
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10
    10 n-r
    0
    1
    2
    3
    4
    5
    6
    7
    8
    9
    10 nCr
    10
    9
    8
    7
    6
    5
    4
    3
    2
    1
    0 1
    10
    45
    120
    210
    252
    210
    120
    45
    10
    1 P
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64
    0.64 Q
    Probability…
    Statistics and Probability

    An individual with cash to invest has two investment choices

    Buy a stock fund that every year

    Question

    An individual with cash to invest has two investment choices:

    Buy a stock fund that every year

    either earns 40% or -20% with a 50/50 probability.

    Buy a bond fund that every year returns either 5% or 0% also with a 50/50 probability.

    Assume that the returns on the two funds are independent, and that returns from year to year are also independent. Also assume an initial portfolio value of $1. (The answers, however, will be unaffected if you use a different initial portfolio value.)

    In addition, suppose the value function is linear and is specified as:

    v(z) = z for z 0

    v(z) = 3z for z 0

    a. Which fund does the investor prefer if he looks at his portfolio i) once a year; or ii) once every two years?

    b. How does your answer to part a. help us understand the equity premium puzzle?

    A
    B
    C
    D
    E
    F
    G
    1
    a
    Q NJ
    Option-1
    Option-2
    quot;Stockquot;
    ‘Bondquot;
    Return per
    Net Return
    Net Return
    year
    Probability
    Return per year
    Probability
    40%
    0.5
    20%%
    5%
    0.5
    2.50%
    20%
    0.5
    10%
    0.5
    0.00%…
    Finance

    Question 3 A simple computer consists of a processor a bus and a memory The computer will work only if all

    Question

    Question 3: A simple computer consists of a processor, a bus and a memory. The computer will work only if all

    three are functioning correctly. The probability that the processor is functioning is 0.99, that the bus is functioning 0.95, and that the memory is functioning is 0.99. Find the probability that the computer will work. Compare the reliability of the three components and the system and provide your insights.

    Answer
    The probability that the computer will work = PP* PB* PM
    Where
    PP is the probability of processor = 0.99
    PB is the probability of bus = 0.95
    PM is the probability of memory = 0.99
    So,…
    Mechanical Engineering

    A recent survey in the town of Mountainview showed that 86% of the population has some form of health insurance

    Question

    A recent survey in the town of Mountainview showed that 86% of the population has some form of heah insurance.

    Furthermore, the survey showed that 21% of the people who have heah insurance also has some form of life insurance. If an adu resident of Mountainview is randomly selected; find the probability that the individual has both heah and life insurance.

    Statistics and Probability

    Which of the following is the best definition of qualitative research?Research conducted in a

    Question

    Which of the following is the best definition of qualitative research?

    Research conducted in a

    natural setting that seeks to understand a complex human behavior by developing a complete narrative description of that behavior

    Procedures used to analyze data after an experiment is completed in order to determine whether the independent variable has a significant effect

    Research that centers on the probability that a statistical test will be significant

    An experimental procedure in which research participants are tested or measured more than one

    Statistics and Probability