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 one hour?
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 one hour?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Transcribed Image Text: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 one hour?
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