Rewrite the following stochastic events in mathematical notation using a suitably defined random
a. The probability that the deflection at the most critical element of a certain structure exceeds 1.80 inches is 0.85.
b. Of every 100 road construction projects, 28 experience two or more fatalities.
c. Twenty percent of the time, a certain aging engineering system component breaks down at least four times during operation every year.
d. Of all college students 75% read their campus newspaper at least once a week.