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The number of customers coming to a bank between 1:00 and 1:30 p.m. of a “normal” day has a Poisson.

The number of customers coming to a bank between 1:00 and 1:30 p.m. of a “normal” day has a Poisson distribution with an average of 39 customers during the half hour. The length of time each customer spends with a teller is Exponential with an average of 45.5 seconds. The average time a customer spends in the line waiting is desired to be three minutes. The manager is wondering how many tellers are required during this time period.
 

Jul 23 2020 View more View Less

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