A state drivers license exam center would like to examine its operation for potential improvement. Arriving customers

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A state driver’s license exam center would like to examine its operation for potential improvement. Arriving customers enter the building and take a number to determine their place in line for the written exam, which is self-administered by one of f ve electronic testers. The testing times are distributed as EXPO(8); all times are in minutes. Thirteen percent of the customers fail the test (it’s a hard test with lots of questions). These customers are given a booklet on the state driving rules for further study and leave the system (on foot). The customers who pass the test select one of two photo booths where their picture is taken and the new license is issued. The photo booth times are distributed TRIA(2.6, 3.6, 4.3). The photo booths have separate lines, and the customers enter the line with the fewest number of customers waiting in queue, ignoring whether anyone is in service; if there is a tie, they enter the nearest booth, Booth 1. Note that this set of rules could lead to what might appear to be irrational customer behavior in the case that neither booth has a queue (that is, the lengths of both queues are zero), Booth 1 is busy, and Booth 2 is idle—a customer coming into the photo area would choose to queue up for Booth 1 (via the tie-breaking rule, since the queue lengths are tied at zero) rather than go right into service at Booth 2—but hey, they can’t see into the photo booths! These customers then leave the system (driving), proudly clutching their new licenses. The center is open for arriving customers 8 hours a day, although the services are continued for an additional hour to accommodate the remaining customers. The customer arrival pattern varies over the day and is summarized here: Hour Arrivals per Hour Hour Arrivals per Hour 1 22 5 35 2 35 6 43 3 40 7 29 4 31 8 22 Run your simulation for 10 independent days, keeping statistics on the average number of test failures per day, electronic-tester and photo-booth utilization (not utilization for the testing resource overall, but separate utilizations for each photo booth), time-average number in each of the three queues, and average customer system time for those customers passing the written exam. Animate all the electronic-test booths and the photo booths. Note that the average customer time in system is to be computed only for those people who pass the examination (there are different ways to make that happen). For the output statistics and comparison comments requested, put a text box inside your Arena f le.

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Simulation With Arena

ISBN: 9780073401317

6th Edition

Authors: W. David Kelton, Randall Sadowski, Nancy Zupick

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