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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 1
A single-server queueing system has an average service time of 16 minutes per customer, which is exponentially distributed. The manager is thinking of converting to a system with a constant service 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 points   
 
QUESTION 2
A small convenience store normally has one employee attending to the cash register. The average time between customer arrivals at the store is 5 minutes. The average service time at the cash register is 3 minutes. If more than two customers are standing at the register (including the customer being served), management has observed that other customers sometimes become upset and leave the store. What percentage of the time will this problem will occur?about 20%
about 30%
about 40%
about 50%

0.5 points   
 
QUESTION 3
Which of the following is not generally considered as a measure of performance in queueing analysis?The average number waiting in line
The average number in the system
The system utilization factor
The cost of servers plus customer waiting cost
The average service time.

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