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The maintenance department of an Oil and Gas Company has 6 large drilling equipment waiting for repairs. These are labelled A, B, C, D, E and F. The respective repair times (in days) and the remaining days before the due date are given in the table below.
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- Completion of three activities is required to accomplish a job. The administrator would liketo know if differences in the arrangement of the three activities results in different jobaccomplishment times. He selects three workers and demonstrates the activities in random orderto them. Then each worker accomplishes the job with each of the activity arrangements. Thecompletion times are recorded. The following table shows the minutes for each worker toaccomplish each job. Arrangements Workers Time Consumed (minutes) Mr. X Mr. Y Mr. ZA 22.4 18.6 21.5B 19.2 20.2 20.7C 20.3 17.0 20.4 Using one percent level of significance, answer following questions:i. Is there a difference in job accomplishment times among different arrangements?ii. Is there a difference in job accomplishment times between the workers?A manufacturer is designing a product layout for a new product productionIt plans to use a production line for 8 hours per day in order to meet forecasted demand of 70 units per day. The product requires 7 tasks in total. These tasks are namelyABC, D, E, F, and Grespectively. Task A does not have any predecessor to startTo start Task B.it requires Task A to be completedStarting tasks needs, the task B to be completed. Also, starting task Dneeded task B to be completed. Task E can only start upon completion of Task C. Whereas starting task F needs the completion of both the tasks D and E. Finally, starting task G needed task Fto be completed. The processing times for tasks, ABC, D. E. and G are 2.8, 2.1, 0.9, 1.0, 1.2, 1.8 and 4.7 minutes respectively. What should be the cycle time in minutes? a 4.7 b. None is the correct answer Oc 7.5 d6.86 e.Jamison Day Consul tants has been entrusted with thetask of evaluating a business plan that has been divided into foursections- marketing, finance, operations, and human resources.Chris, Steve, Juana, and Rebecca form the evaluation team. Each of them has expertise in a certain field and tends to finish thatsection faster. The estimated times taken by each team memberfor each section have been outlined in the following table. Furtherinformation states that each of these individuals is paid $60/hour.a) Assign each member to a different section such that JamisonConsultants's overall cost is minimized.b) What is the total cost of these assignments?
- The company has obtained a new contract to finish up some apartments that had been constructed by another firm whose contract has since been terminated by the building consortium that hired it. There are six apartments. DeLaw Construction Limited has the contract to first electrically wire each apartment and to then paint them. Wiring must be completed before painting and the company can only work on one apartment at a time. Determine the optimal sequence in which DeLaw Construction should do each apartment. Provide a time line for the sequence as well. The table below shows how much time each apartment is estimated to require for both wiring and painting, in days. Each apartment is denoted by the area it is located in. APARTMENT WIRING (days) PAINTING (days) Freeport 10 14 Cascade 6 11 Tacarigua 13 9 St Madeleine 4 8 La Romaine 12 7 Cedros 3 4At 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…Jamison Day Consultants has been entrusted with thetask of evaluating a business plan that has been divided into foursections—marketing, finance, operations, and human resources.Chris, Steve, Juana, and Rebecca form the evaluation team. Eachof them has expertise in a certain field and tends to finish thatsection faster. The estimated times taken by each team memberfor each section have been outlined in the table below. Furtherinformation states that each of these individuals is paid $60/hour.a) Assign each member to a different section such that JamisonConsultants’s overall cost is minimized.b) What is the total cost of these assignments?Times Taken by Team Members for Different Sections (minutes)MARKETING FINANCE OPERATIONS HRChris 80 120 125 140Steve 20 115 145 160Juana 40 100 85 45Rebecca 65 35 25 75
- Amanufacturer is designing a product layout for a new product production. It plans to use a production line for 8 hours per day in order to meet forecasted demand of 150 units per dayThe product requires 7 tasks in total. These tasks are namely, ABC, DE, Fand GrespectivelyTask A does not have any predecessor to start. To start Task B, it requires Task A to be completedStarting tasks C needs, the task B to be completed. Also starting task D needed task B to be completed. Task E can only start upon completion of Task C. Whereas starting task F needs the completion of both the tasks and E. Finally, starting task G needed, task F to be completed. The processing times for tasks, AB 3, C, D, E, F , and Gare are2.4,2.2,0.9, . 10.12. 1.8. are 1.5 minutes respectively. What should be the cycle time in minutes? .4.80 O2.67. c 4.56 d is the correct answer e3.20Artificial intelligence method exercise: Consider 5 jobs having the processing times pj, due-dates dj and the weights wj of the jobs j=1, ..., 5, given in the table: Jobs 1 2 3 4 5 pj 10 6 5 4 2 dj 12 9 14 8 3 wj 5 10 5 1 3 Calculate the following for the schedule: <5, 2, 3, 1, 4> showing your steps:(i) the total weighted completion time (ii) the maximum lateness (iii) the number of tardy jobsThe following table contains information concerning four jobs that are awaiting processing at awork center.JobJob Time(days)Due Date(days)A 14 20B 10 16C 7 15D 6 17a. Sequence the jobs using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. Assume the list is by orderof arrival.b. For each of the methods in part a, determine (1) the average job flow time, (2) the average tardiness, and (3) the average number of jobs at the work center.c. Is one method superior to the others? Explain.
- William, a project manager, has a workload of 25,000 hours that needs to be completed in 30 weeks. He has a team of 20 people who work five 8-hour days per week. He notices that in the 30-week period, there are three holidays and 6 members have each requested 8 days off. Given this information, William is _____ short of completing his workload. Question options: 23,136 hours 1,864 hours 480 hours 1,480 hours 384 hoursPeter Minn is planning to go to the Department of Motor Vehicles to have his driver’s license renewed. His friend, Patricia, who is accompanying him, is applying for a new license. In both cases there are five steps that are required: (A) having a picture taken, (B) signing a signature verification form, (C) passing a written test, (D) passing an eye test, and (E) passing a driving test.For renewals the steps are performed in the order A, B, C, D, and E with average times required, respectively, of 0.2, 0.1, 0.3, 0.2, and 0.6 hour. In the case of new applications, the steps are performed in the sequence D, B, C, E, and A, with average times required of 0.3, 0.2, 0.7, 1.1, and 0.2 hour, respectively. Peter and Pat go on a day when the department is essentially empty. How should they plan their schedule in order to minimize the time required for both to complete all five steps?Planning the next semester's course schedule. The optimal schedule for the whole class may be calculated with the help of an algorithm after students enter their desired course load. The school has determined that a perfect schedule cannot be created in a reasonable length of time. To save time, the team has elected to use a less complex approach that nonetheless produces a workable, if not perfect, strategy. Which overarching principle may be seen most clearly in this decision?