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  41.TheM/D/1modelresultscanbederivedfromwhichofthefollowingsystems? a.M/M/1withλ=0 b.M/G/1withμ=0 c.M/G/1withσ=0 d.M/M/2withfinitequeuelength. 42.Arenegerefersto a.acustomerwhorefusestojointhequeue. b.acustomerwhorefusesservicebyaspecificserver. c.acustomerwhojoinsthequeuebutleavesbeforeserviceiscomplete. d.acustomerwhorequiresextraservicetime. 43.Ajockeyrefersto a.acustomerwhorefusestojointhequeue. b.acustomerwhorefusesservicebyaspecificserver. c.acustomerwhojoinsthequeuebutleavesbeforeserviceiscomplete. d.acustomerwhoswitchesbetweenqueuesinthesystem. 44.Whatisthemeanarrivalratebasedonthefollowing10arrivalrateobservations? 16 15 14 15 17 16 14 15 13 16 45.Acompanyhasrecordedthefollowinglistofservicerates(customers/hour)foroneofitsservers.Whatisthemeanservicetimeforthisserver? 23 34 23 33 42 43 24 46.Customersarriveatastorerandomly,followingaPoissondistributionatanaveragerateof90perhour.Howmanycustomersarriveperminute,onaverage? 47.Customersarriveatastorerandomly,followingaPoissondistributionatanaveragerateof90perhour.Howmanycustomerswouldyouexpecttoarriveina20minuteperiod? 48.Customersarriveatastorerandomly,followingaPoissondistributionatanaveragerateof20perhour.Whatistheprobabilityofexactly0,12,and3arrivalsina 15minuteperiod? ArrivalsProbability 00.0067 10.0336 20.0842 30.1404 49.Agroceryclerkcanserve20customersperhouronaverageandtheservicetimefollowsanexponentialdistribution.Whatistheexpectedservicetimepercustomer? 50.Agroceryclerkcanserve20customersperhouronaverageandtheservicetimefollowsanexponentialdistribution.Whatistheprobabilitythatacustomer'sservicetimeislessthan2minutes?    ...

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