A statistics professor receives an average of seventeen e-mail messages per day from students. Assume the number of messages approximates a Poisson distribution. What is the probability that on a randomly selected day she will have more than 20 messages?
P(More than 20 messages)
= 1 - P(Less than or equal to 20 messages)
= 1 - Poisson.dist(20, 17, True) [Excel Formula]
= 0.1945
A statistics professor receives an average of seventeen e-mail messages per day from students. Assume the...