The mean of the exponential distribution equals the mean of the Poisson distribution only when the former distribution has a mean equals:
A) 1.00.
B) 0.50.
C) 0.25.
D) 2.00.

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 1.00.

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