Question 14.81 According to the information provided in Table 14-3, which presents a queuing problem solution what is the utilization rate of the service facility?

14.81 According to the information provided in Table 14-3, which presents a queuing problem solution what is the utilization rate of the service facility?

(a) 0.111

(b) 0.889

(c) 0.222

(d) 0.722

(e) 0.667

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14.82 Little’s Flow Equations are transferable to a production environment. Which of the following would be a proper interpretation of Little’s Flow Equations?

(a) Flow Rate = Inventory × Flow Time

(b) Flow Time = Inventory × Flow Rate

(c) Inventory = Flow Rate × Flow Time

(d) Time to Take an Order = Flow Rate × Flow Time

(e) Flow Rate = Time to Take an Order × Flow Time

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14.83 If everything else remains constant, including the mean arrival rate and service rate, except that the service time becomes constant instead of exponential,

(a) the average queue length will be halved.

(b) the average waiting time will be doubled.

(c) the average queue length will be doubled.

(d) There is not enough information to know what will happen to the queue length and waiting time.

(e) none of the above

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14.84 At an automatic car wash, cars arrive randomly at a rate of 7 cars every 30 minutes. The car wash takes exactly 4 minutes (this is constant). On average, what would the length of the line be?

(a) 8.171

(b) 7.467

(c) 6.53

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