Question 12 2 pts The number of telephone calls that arrive at a phone exchange is often modeled as a Poisson random var

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Question 12 2 Pts The Number Of Telephone Calls That Arrive At A Phone Exchange Is Often Modeled As A Poisson Random Var 1 (390.04 KiB) Viewed 115 times

Question 12 2 pts The number of telephone calls that arrive at a phone exchange is often modeled as a Poisson random variable. Assume that on the average there are 15 calls per hour. What is the probability that there are more than 20 calls in two hours? O 0.9866 0.0418 0.9647 0.0830 0.9647