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

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

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

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

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

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

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