SOLUTION: The number of messages received by a computer bulletin board is a Poisson random variable with a mean rate of 13 messages per hour. What is the probability that 6 messages are rece

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Question 1022667: The number of messages received by a computer bulletin board is a Poisson random variable with a mean rate of 13 messages per hour. What is the probability that 6 messages are received in a given hour?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
The Poisson pmf is
p%28x%29+=+%28%28mu%29%5Ex%2Fx%21%29e%5E%28-mu%29
==> p%286%29+=+%28%2813%29%5E6%2F6%21%29e%5E%28-13%29+=+0.01515, to five decimal places.