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Qmmc - QUEUING TEMPLATES 1995 by David W Ashley Revised...

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QUEUING TEMPLATES © 1995 by David W. Ashley Revised May 21, 1997 This worksheet computes queuing results for the following models: M / G / 1 M / M / c Click on the page tab to use the model of your choice. Enter the required parameters in the boxes. Parameters for all models are initially linked to those entered for M/M/s.
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MG1 Page 2 M/G/1 queuing computations Arrival rate 0.25 per minute Average service time 3.1 minutes Standard dev. of service time 1 minutes You may only change the red c Time unit minute Utilization 77.50% P(0), probability that the system is empty 0.2250 Ii, expected queue length 1.4736 I, expected number in system 2.2486 Ti, expected time in queue 5.8944 minutes T, expected total time in system 8.9944 minutes
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MG1 Page 3 cells! THE ARRIVAL RATE
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MG1 Page 4 SHOULD BE LESS THAN THE OVERALL SERVICE RATE!
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MMc Page 5 M/M/c queuing computations lambda/mu Arrival rate 1.81 per hour Service time 1.40 /s Number of servers 3 (max of 40) Time Unit hour You may only change the red cells! P(0) = Utilization 84.58% P(0), probability that the system is empty 0.0409 0 Ii, expected queue length 3.9684 1 I, expected number in system
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