Question: Determine the following:
a. the probability that a uniform random variable whose range is between 10 and 30 assumes a value in the interval (10 to 20) or (15 to 25)
b. the quartiles for a uniform random variable whose range is from 4 to 20
c. the mean time between events for an exponential random variable that has a median equal to 10
d. the 90th percentile for an exponential random variable that has the mean time between events equal to 0.4.