Q5 KDA2↓Paragraph1C|>Styles231456INEN435 Stochastic Operations ResearchHomework 5-Queuing Theory5. Consider a bank with three tellers. An average of 90 customers per hour arrive at thebank and wait in a single line for an idle teller. The average time it takes to serve acustomer is 2.0 minutes. Assume that inter-arrival times and service times areexponential. Determine1. The expected number of customers present in the bank.2. The expected length of time a customer spends in the bank.3. The fraction of time that a particular teller is idle.6. A car washing station is trying to decide how many washing machines to operate.Suppose an average of 15 cars arrive each hour, and the average washing time for a caruton Inter arrival times and service times are exponential, and the system may beEG diting

s: The number of servers in the system, which is 3 hereμ: Mean Service Rate, which is 60/2.0 = 30…

Answered: 5. Consider a bank with three tellers.…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

Section: Chapter Questions

Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...

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QUESTION 2 [25 MARKS] Read the following extract and then answer the questions below. Global Blue: "Circle are experts in B2B research and segmentation" From its headquarters near Geneva in Switzerland, Global Blue offers a range of services which help retailers to increase their revenues from the lucrative international traveller market by offering VAT refunds. Having introduced the concept of Tax-Free Shopping over 30 years ago, Global Blue now works with over 270,000 of the world's favourite retailers, shopping brands and hotels in over 40 countries. Like many other B2B businesses, Global Blue believes that the purchasing behaviour of their target market is largely influenced by their 'firmographic profile' their size, their speciality, their home country and so on. However, examples of retailers behaving in unexpected ways, given their firmographic profile, led Global Blue to consider a different viewpoint. Are a retailer's needs and attitudes not a far more powerful predictor of…
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QUESTION 2 In an effort to reduce energy costs, a major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for 1 week has been $265. To determine whether the changes have signficantly reduced costs, the university takes a sample of 50 classrooms. They find that the average cost for 1 week is $247 with a standard deviation of $60. When testing the hypothesis (at the 5% level of significance) that the average energy use has decreased from the past, what is the test statistic? (please round your answer to 2 decimal places)
Q4. What's the difference between Control Quality and Manage Quality? O Manage Quality means looking for defects in deliverable while Control Quality means auditing a project to check the overall process. Control Quality means inspecting for defects in deverbals while Manage Quality means auditing a project to check the overall process. Control Quality involves charts like histograms and control chats, while Manage Quality doesn't use those charts. o Control Quality and Manage Quality mean the same thing.
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