Author Question: The exponential probability distribution is used with a. a discrete random variable. b. a ... (Read 95 times)

geoffrey · **on:** Aug 1, 2018

The exponential probability distribution is used with
a. a discrete random variable.
b. a continuous random variable.
c. any probability distribution with an exponential term.
d. an approximation of the binomial probability distribution.

Question 2

The random variable x is the number of occurrences of an event over an interval of ten minutes. It can be assumed that the probability of an occurrence is the same in any two-time periods of an equal length. It is known that the mean number of occurrences in ten minutes is 5.3 . The expected value of the random variable x is
a. 2.
b. 5.3.
c. 10.
d. 2.30.