What is the average number of people waiting for service

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1. There are 3 servers in the checkout area. The average interarrival time of customers is 2 minutes. The processing time is 5 minutes. The coefficients of variation for the arrival process and the service process are 1 and 0.85 respectively. What is the average wait time? A. 7.17 minutes B. 4.17 minutes C. 6.17 minutes D. 5.17 minutes

2. A hardware store rents its one wood chipper. A request for the chipper arrives every 4 days with a standard deviation of 4 days. On average clients rent the chipper for one day. If a request arrives and the chipper is not available, customers rent from another company. How many wood chippers are rented per day? (What is the flow rate?) A. .6 rentals/day B. .3 rentals/day C. .2 rentals/day D. .8 rentals/day

3. There are 3 servers in the checkout area. The average interarrival time of customers is 2 minutes. The processing time is 5 minutes. The coefficients of variation for the arrival process and the service process are 1 and 0.85 respectively. Suppose they want to have enough servers so that the average wait time is less than two minutes. How many servers should they have on staff? A. 2 B. 4 C. 5 D. 3

4. There are 3 servers in the checkout area. The average interarrival time of customers is 2 minutes. The processing time is 5 minutes. The coefficients of variation for the arrival process and the service process are 1 and 0.85 respectively. How many customers, on average, are receiving service at a given time? A. 2.5 B. 4.5 C. 2 D. 1.5

5. There are 3 servers in the checkout area. The average interarrival time of customers is 2 minutes. The processing time is 5 minutes. The coefficients of variation for the arrival process and the service process are 1 and 0.85 respectively. What is the average number of people waiting for service? A. 16.425 B. 14.425 C. 15.425 D. 13.425

Reference no: EM132195142

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