A small coffee shop has a single barista. Because the shop issmall, there are no tables or chairs. Consequently, customers waitin a single line to order and receive their coffee and leave theshop as soon as their order is received. Customers arrive at theshop at the rate of 27per hour. It is estimated that the baristaneeds, on average, 60seconds (exponentially distributed) to serveeach customer.a. The average server utilization is
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