(a) Queuing system A has a utilization of 80% and queuing system B has a utiliza
ID: 331972 • Letter: #
Question
(a) Queuing system A has a utilization of 80% and queuing system B has a utilization of 90%. Both have a single server. Say the utilization of both systems increases by 5%, i.e., A increases from 80% to 85% while B increases from 90% to 95%. which system is likely to experience the biggest change in the average time in queue? A. System A B. System B C. Time-in-queue for each system will increase by the same amount D. More information is needed to determine which has a bigger change in average time in queue (b) YourNurse (YN) Inc uses certified nurses to answer medical queries from customers over the phone When patients call into YN they are first asked to provide their zip code which then allows YN to route their call to the call center nearest to the patient (they operate 10 across the country). Which single suggestion in the following list (and explanation) is most likely to reduce the average time callers wait before speaking with a nurse? A. Run an advertising campaign to increase demand and to better utilize their nurses. B. Train their nurses so that they spend more time answering the patient's questions C. Instead of using caller's zip codes, route calls to the call center with the fewest callers to help prevent situations in which there are idle nurses at the same time that there are callers on hold D. Play a recording or useful medical information while callers are on hold so as to decrease their perception of how long they are waiting None of these are correct. E. (c) The off-peak pricing approach, like happy hour, is one way to reduce wait by reducing during times A. Customer arrival, off-peak B. Customer arrival, peak C. Supply, off-peal D. Supply, peak (d) Which of the following statement is FALSE regarding the waiting time in a single server model? A. B. C. D. When capacity decreases, the average waiting time increases. when the processing time decreases, the average waiting time decreases. when variability in the arrival or service process increases, the average waiting time increases. When utilization increases, the average waiting time decreasesExplanation / Answer
A.
B.
Option C
As this would resolve the issue and the pin code entry is a futile exercise.
C.
Option B.
As customer arrival is shifted from peak to non-peak times.
D.
Option D:
Ans Wq Avg waiting time in the Line Wq = U^2/(1-U) / A So we get to see that average arrival time is also required, as it DRelated Questions
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