59) During the two hours of the morning rush from 8 a.m. to 10 a.m., 100 custome

Question

59) During the two hours of the morning rush from 8 a.m. to 10 a.m., 100 customers per hour arrive at the coffee shop. The coffee shop has a capacity of 80 customers per hour. How long does the customer arriving at 10 a.m. have to wait to be served? A) 2 hours B) 0.5 hour C) 1 hour D) 0.25 hour 60) Packages arrive at a facility at a rate of 30 per hour and are processed continuously at a rate of 25 per hour. The facility is open from 8 a.m. to 4 p.m. How long does the last package wait before it is processed? A) 1.20 hours B) 1.33 hours C) 1.60 hours D) 1.75 hours 61) A server operates with 80% utilization. The coefficient of variation for the service process is 0.5 and the coefficient of variation of the arrival process is 1. The average processing time is 3 minutes. What is the average time a customer waits in the queue according to the single-server queue model? A) 7.5 minutes B) 3.75 minutes C) 3 minutes D) 10.5 minutes

Explanation / Answer

59) B) .5 hours

60) C) 1.60 Hours

61) D) 10.5 Minutes

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