Customers Arrive at Their Friendly DMV at a Rate of 45

question 87

Essay

Customers arrive at their friendly DMV at a rate of 45 people per hour.There are four servers that can process customers at an average of 3 minutes.
(a)What is the average wait time?
(b)What is the average number of customers waiting?
(c)What is the average number of customers in the DMV?

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