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The number of telephone calls per unit of time made to a call center is often...

The number of telephone calls per unit of time made to a call center is often modeled as a Poisson random variable. Historical data suggest that on the average 15 calls per hour are received by the call center of a company. What is the probability that the time between two consecutive calls is longer than 8 minutes? Write all probability values as numbers between 0 and 1.

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