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Poisson Distribution of Telephone Calls

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Telephone calls are being produced through a certain exchange at random times on the average of 4 per min. Determine the probability in a 15 second interval there are 3 or more calls.

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Solution Summary

The solution offers a calculation of the probability of a number of telephone calls in a certain interval based on a poisson distribution.

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Let X be the number of calls in t minute, and X is poisson distributed, then E(X)=4t, where t is in terms ...

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