5.81 Poisson distribution?
Suppose you find in your spam folder an average of two spam emails every 10 minutes. Furthermore, you find that the rate of spam mail from midnight to 6 A.M. is twice the rate during other parts of the day. Explain whether or not the Poisson distribution is an appropriate model for the spam process.
5.81
The Poisson distribution is not appropriate because the rate is not constant and increases between the midnight and 6 a.m. period.