MGT2251_Quiz13_111711

# MGT2251_Quiz13_111711 - Last Name First Name T-Square ID...

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Last Name, First Name: T-Square ID QUIZ # 13 (not 11) FORM: C DATE: 11/17/2011 TODAY's QUESTIONs and Your Answers: 1 What is the average number of customers in the system described above? 2 2 points TIF (#58) M/M/1 l = 4.0 customers/minute m = 7.0 customers/minute L= l /(m - l)= 4 / (7-4)= 4/3 = 1.333 2 What is the average number of customers waiting in line behind the person being served in the problem described above? 2 2 points TIF (#59) M/M/1 l = 4.0 customers/minute m = 7.0 customers/minute Lq= l 2 /m(m - l)= 4 2 / 7(7-4)= 16/21 = 0.762 3 What type of queuing model applies to the problem described above? 2 2 points TIF (#69) M/M/2 M/M/2 M/M/3 Mean Arrival Rate: 4 occurrences per minute Mean Service Rate: 2 occurrences per minute Probability "No Units" in System: 0.111 4 Based on the description above, on average, how long does each customer spend waiting in line? 2 2 points TIF (#87) M/M/3 l = 4.0 r = (l / 3m) = 0.67 m = 2.0 m= 3.0 m (l/m) m (Po) 16.0 * 0.111 1.7760 Wq= W- (1/ m ) = = = = 0.222
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