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Mathematics, 22.03.2021 18:00 steven0448
Customers arrive at a checkout counter in a department store according to a Poisson distribution at an average of nine per hour. If it takes approximately ten minutes to serve each customer, find the mean and variance of the total service time in minutes for customers arriving during a 1-hour period. (Assume that a sufficient number of servers are available so that no customer must wait for service.)
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