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A SINGLE-SERVER QUEUEING SYSTEM HAS AN AVERAGE SERVICE

A SINGLE-SERVER QUEUEING SYSTEM HAS AN AVERAGE SERVICE

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Author: Christine Farr
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QUESTION 1A single-server queueing system has an average service time of 16 minutes per customer, whichis exponentially distributed. The manager is thinking of converting to a system with a constantservice time of 16 minutes. The arrival rate will remain the same. The effect will be to:increase the utilization factor.decrease the utilization factor.increase the average waiting time.decrease the average waiting time.not have any effect since the service time is unchanged.0.5 pointsQUESTION 2A small convenience store normally has one employee attending to the cash register. The averagetime between customer arrivals at the store is 5 minutes. The average service time at the cashregister is 3 minutes. If more than two customers are standing at the register (including thecustomer being served), management has observed that other customers sometimes become upsetand leave the store. What percentage of the time will this problem will occur?about 20%about 30%about 40%about 50%0.5 pointsQUESTION 3Which of the following is not generally considered as a measure of performance in queueinganalysis?The average number waiting in lineThe average number in the systemThe system utilization factorThe cost of servers plus customer waiting costThe average service time.0.5 points

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