The mean of the exponential distribution equals the mean of the Poisson distribution only when the former distribution has a mean equal to:
A)1.0.
B)0.50.
C)0.25.
D)any value smaller than 1.0.

Question

Quizplus · Accepted Answer

The mean of the exponential distribution is 1/λ, and the mean of the Poisson distribution is λ, where λ is the rate parameter. These means are equal only when λ = 1, making the mean of both distributions 1.0.

The Mean of the Exponential Distribution Equals the Mean of the Poisson