The number of calls to an Internet service provider during the hour between 6:00 and 7:00 p.m. is described by a Poisson distribution with mean equal to 15. Given this information, the standard deviation for the call distribution is about 3.87 calls.

Question

Quizplus · Accepted Answer

The standard deviation for a Poisson distribution is the square root of the mean, so the standard deviation for a Poisson distribution with mean 15 is sqrt(15) = 3.87.

The Number of Calls to an Internet Service Provider During