Question
ABC minorleaguesoccerteamhasoneboxofficeclerk.Onaverage,ticketscanbesoldto8customersperminute.Fornormalgames,customersarriveat therateof 5perminute.AssumearrivalsfollowthePoissondistributionandservicetimes followtheexponentialdistribution. a.Whatistheaveragenumberofcustomers waitinginline? b.Whatistheaveragetimeacustomerspendsinthewaitingline? c.Whatistheaveragenumberofcustomersinthesystem? d.Whatisacustomer's averagetimeinthesystem? e.Whatistheprobabilitythatsomeonewillbebuyingticketswhenanarrivaloccurs? The team isplayingintheleagueplayoffsandanticipatesmorefans,estimatingthatthearrivalratewillincreaseto12perminute.Outputissuppliedfora2-cashieranda3-cashiersystem. NumberofChannels 2 3 ArrivalRate 12 12 ServiceRate 8 8 ProbabilityofNoUnitsinSystem
ABC minorleaguesoccerteamhasoneboxofficeclerk.Onaverage,ticketscanbesoldto8customersperminute.Fornormalgames,customersarriveat therateof 5perminute.AssumearrivalsfollowthePoissondistributionandservicetimes followtheexponentialdistribution.
a.Whatistheaveragenumberofcustomers waitinginline?
b.Whatistheaveragetimeacustomerspendsinthewaitingline?
c.Whatistheaveragenumberofcustomersinthesystem?
d.Whatisacustomer's averagetimeinthesystem?
e.Whatistheprobabilitythatsomeonewillbebuyingticketswhenanarrivaloccurs?
The team isplayingintheleagueplayoffsandanticipatesmorefans,estimatingthatthearrivalratewillincreaseto12perminute.Outputissuppliedfora2-cashieranda3-cashiersystem.
NumberofChannels
2
3
ArrivalRate
12
12
ServiceRate
8
8
ProbabilityofNoUnitsinSystem
.1429
.2105
AverageWaitingTime
.1607
.0197
AverageTimeinSystem
.2857
.1447
AverageNumberWaiting
1.9286
.2368
AverageNumberinSystem
3.4286
1.7368
ProbabilityofWaiting
.6429
.2368
Probabilityof7inSystem
.0381
.0074
f.The stadium has space for 6 customers to wait indoors to buy tickets. Which of the two systems shown above will be better, and why?
g.Which system do you advise them to use in the new situation, overall: 1-, 2-, or 3-cashier? Justify your answer.
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