In her last semester at SPC, Polly Hedron needs to take Statistics, Composition 2, and Ethics. Because Polly is registering early, she has 17 choices for her section of Statistics, 11 choices for her section of Composition, and 19 choices for her section of Ethics. From how many possible schedules ca

In her last semester at SPC, Polly Hedron needs to take Statistics, Composition 2, and Ethics. Because Polly is registering early, she has 17 choices for her section of Statistics, 11 choices for her section of Composition, and 19 choices for her section of Ethics. From how many possible schedules ca

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter12: Queueing Models

Section: Chapter Questions

Problem 59P

See similar textbooks

Similar questions

In her last semester at SPC, Polly Hedron needs to take Statistics, Composition 2, Ethics, and Physics. Because Polly is registering early, she has 14 choices for her section of Statistics, 19 choices for her section of Composition, 17 choices for her section of Ethics, and 18 choices for her section of Physics. From how many possible schedules can Polly choose? (You may presume that none of these sections interfere with each other) Your Answer:
Currently a company that designs Web sites has six customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. Job Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) A 6 18 48 B 4 22 52 C 1 30 70 D 10 14 28 E 7 12 56 F 5 20 62 Develop a schedule by using the first-come, first-served (FCFS) rule and calculate the average flow time and average days past due for the schedule. Develop a schedule by using the earliest due date (EDD) rule and calculate the average flow time and average days past due for the schedule. Comment on the performance of the FCFS and EDD rules relative to average flow time and average days past due.
Currently a company that designs Web sites has five customers in its backlog. The time since the order arrived, processing time, and promised due dates are given in the following table. The customers are ready to be scheduled today, which is the start of day 190. Customer Time Since Order Arrived (days ago) Processing Time (days) Due Date (days from now) Upper AA 6 18 66 Upper BB 3 24 58 Upper CC 2 32 100 Upper DD 10 22 26 Upper EE 8 12 50 a. Develop separate schedules by using the FCFS and EDD rules. Compare the schedules on the basis of average flow time and average days past due. Part 2 Using the FCFS (first come, first served) decision rule for sequencing the customers, the order is: Sequence 1 2 3 4 5 Customer D E A B C Part 3 Using…
Which of the following relates to How many employees should be scheduled? 1.Group of answer choices 2.Operations Planning 3.Operations Process 4.Capacity Planning 5.Production-Method Decisions
As a production supervisor, Joe decides on Friday afternoon how many units of output his employees will be able to produce and on which days certain products will be run in his department. He also decides which of his employees are going to be responsible for operating which machines within the department next week, as his employees are multi-skilled assemblers. On Monday, he informs his employees whom he has assigned to which machines by handing out assignment sheets and informs the employees that the schedule is going to be difficult due to the increased number of units. He goes on to tell them that he is sure they can fulfill the schedule because they are such good and skilled employees. Each day during the week he checks the amount of output that the employees have completed and the number of units that have been scraped. When Joe decides which of his employees are going to be responsible for operating which machines, he is performing which of the management functions? Select one:…
The Theory of Constraints method is also referred to as the drum-buffer-rope method. Question content area bottom Part 1 True False
An independent accountant is planning to prepare tax returns for six of her clients.Prior to her actually preparing each return, her secretary checks the client’s file to besure all the necessary documentation is there and obtains all the tax forms needed forthe preparation of the return. Based on past experience with the clients, her secretaryestimates that the following times (in hours) are required for preparation of the returnand for the accountant to complete the necessary paperwork prior to filing each return:Client Secretary Time Accountant Time1 1.2 2.52 1.6 4.53 2.0 2.04 1.5 6.05 3.1 5.06 0.5 1.5In what order should the work be completed in order to minimize the total timerequired for all six clients?
4. The Spencer Optics Company produces an inexpensive line of sunglasses. The manufacturing process consists of assembling two plastic lenses (produced by the firm's plastic molding depart- ment) into a finished frame (purchased from an outside supplier). The company is interested in using material requirements planning to schedule its operations and has asked you to prepare an example to illustrate the technique. The firm's sales manager has prepared a 10-week sales forecast for one of the more popular sunglasses (the Classic model) for your example. The forecast is 100 units per week. Spencer has customer orders of 110 units, 80 units, 50 units, and 20 units in weeks 1, 2, 3, and 4, respectively. The sunglasses are assembled in batches of 300 units. Presently, three such batches are sched- uled: one in week 2, one in week 5, and one in week 8. Complete the following time-phased record: Week hand 1 2 3 4 5 6 7 8 9 10 Classic Model On MPS Record Forecast Orders Projected available…
b. The Healthy Food Restaurant, a 24-hour restaurant, faces changing requirements from hour tohour. More workers are needed for peak hours, and fewer are needed in between. The followingTable 6 (below) shows the worker requirement for the first 12 hours in the restaurant:Table 6. Staff Requirement at the Healthy Food RestaurantTime Period 10AM11AM12PM1PM2PM3PM4PM5PM6PM7PM8PM9PMRequirement 8 10 12 12 9 7 6 7 9 10 12 8AssignedOn DutyOverstaffed8(i) You are required to apply the first-hour principle to staff each hour with the required number ofcafeteria staff, showing how many staff are on duty each given hour, the number of staffyou have assigned to work each hour and any overstaffing for each hour. i. Schedule the staff to work in 8-hour shifts.
b. What is the minimum cycle time that can be considered? Determine the balancethat results from the ranked positional weight technique for this cycle time.
At the campus copy shop, six jobs have arrived in the order shown (A, B, C, D, E, and F) at the beginning of the day 1 (today, which is a work day). All of the jobs are due at various times today. Your job is to evaluate four common sequencing rules. JOB DUE (IN HOURS) DURATION (HOURS REQUIRED) A 8 (this job is due in 8 hours) 1.65 B 5.5 (this job is due in 5.5 hours) 1.20 C 4.5 (this job is due after lunch in 4.5 hours) 0.85 D 6 (this job is due in 6…
Your top team member has performed extremely well, and you want toreward her. She knows that you don’t have enough money in the budget togive her a bonus, so she approaches you and requests an extra day off, eventhough she is out of vacation days. She asks if she can take one of her sickdays, even though the company doesn’t allow that. Which of the following iscorrect?A. You should give her the time off, because McLelland’s Achievement Theory statesthat people need achievement, power, and affiliation to be motivatedB. You should give her the time off, because Expectancy Theory says that you need togive people an expectation of a reward in order to motivate themC. You should give her the time off, because a Theory Y manager trusts the teamD. You should not give her the time off Which of the following is NOT a tool or technique of Qualitative RiskAnalysis?A. Risk urgency assessmentB. Expected monetary value analysisC. Probability and impact matrixD. Risk categorization