Suppose that the probabilities for intervals of time between successive occurrences of an event are described by an exponential distribution.The standard deviation of this distribution:
A)is always less than the variance of the distribution
B)is always equal to the expected value of the distribution
C)is always greater than the variance of the distribution
D)is always equal to the variance of the distribution
E)a and b

Question

Quizplus · Accepted Answer

For an exponential distribution, the standard deviation is equal to the expected value (mean) of the distribution.

Suppose That the Probabilities for Intervals of Time Between Successive