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Math · Statistics And Probability
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Problem 5) The Friendly Neighbor Grocery store has a single check-out stand with a full-time cashier. Customers arrive of 2.5 randomly at the stand at a mean rate of 20 per hour. The service-time distribution is exponential, a mean minutes. situation has resulted in occasional long lines and complaints from customers. Therefore, because This there is no room for a second checkout stand, the manager is considering the alternative of hiring another person to help the cashier by bagging the groceries. This help would reduce the expected time required to process percentage to 1.5 minutes, but distribution would be exponential. The manager would like to have the of time that there are more than two customers at the stand below 25 percent. She also would like to c own at least have no more than 5 percent of the customers needing to wait at least 5 minutes before beginning service, or 7 minutes before finishing service Compute L. for both the current mode of operation and the considered alternative. Law.wa.Po P1.P2

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