(a) the average flow time (b) average tardiness (c) average number of jobs at the work center, for each of these rules:
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- There are six jobs as below. The processing time (in days) and due date for each job are below. Job |What are the advantages and disadvantages of the shortest processing time (SPT) rule?What are the benefits and drawbacks of the shortest processing time rule (SPT)?The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: Job W X Y Z Processing Time (hrs) 4 3 2 1 If he uses the shortest processing time first priority rule to schedule these jobs, what will be the average number of jobs in his shop today? Multiple Choice 0 1 2 3 Due (hrs from now) 4 5 2 1 4An 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?The owner/operator of the local franchise of Handyman, Inc., has four jobs to do today, shown in the order they were received: Job W X Y Z Processing Time (hrs) 4 3 2 1 Multiple Choice If he uses the shortest processing time first priority rule to schedule these jobs, what will be the average completion time? O 7.5 hours 5 hours 3 hours 2.5 hours Due (hrs from now) 4 2 hours 5 2 1The following 5 overhaul jobs are waiting to be processed at Avianic's Engine Repair Inc. These jobs were logged as they arrived. All dates are specified as planning calendar days. Calculate the Critical Ratios (CR): (Enter all responses rounded to two decimal places.) Job CR Job Due Date Duration (days) 103 103 214 10 205 205 223 309 309 217 11 412 219 412 517 216 15 517 Assume that all jobs arrived on day 180; today's date is 200.Five jobs are ready for processing at time zero through a workstation. The details of the processing time and the due date of completion is provided in the following table. Job A B Processing Time (days) I5 Due Date 11 6 3 16 19 10 D E 15 Using the earliest due date (EDD) rule, the average lateness for the five jobs is decimal place. Round your answer to one Your Answer: AnswerThe data for five tax analysis jobs waiting to be processed by Martha at T. R. Accounting Service has been collected in the Microsoft Excel Online file below. Open the spreadsheet and perform the required analysis to answer the questions below. Questions 1. Use the shortest-processing-time (SPT) sequencing rules to sequence the jobs. Compute the flow time, tardiness, and lateness for each job, and the average flow time, average tardiness, and average lateness for all jobs. Use minus sign to enter negative lateness values, if any. Round the average values to two decimal places. Sequence Job Processing Time Due Date Flow Time Lateness Tardiness 1 2 3 4 5 Average 2. Use the earliest-due-date (EDD) sequencing rules to sequence the jobs. Compute the flow time, tardiness, and lateness for each job, and the average flow time, average tardiness, and average lateness for all jobs. Use minus…The first five columns of the following table contain information about a set of four jobs that just arrived (end of Hour 0 or beginning of Hour 1) at an engine lathe. They are the only ones now waiting to be processed. Several operations, including the one at the engine lathe, remain to be done on each job. Determine the schedule by using (a) the CR rule and (b) the S/RO rule. Compare these schedules to those generated by FCFS, SPT, and EDD. Job ProcessingTime at EngineLathe (hours) TimeRemainingUntil Due Date(days) Number ofOperationsRemaining Shop TimeRemaining(days) CR S/RO 1 2 3 4 2.3 10.5 6.2 15.6 15 10 20 8 10 2 12 5 6.1 7.8 14.5 10.2 2.46 1.28 1.38 0.78 0.89 1.10 0.46 -0.44Given the following information on job times and due dates, determine the optimal processingsequence using (1) FCFS, (2) SPT, (3) EDD, and (4) CR. For each method, find the average jobflow time and the average job tardiness. Jobs are listed in order of arrival.JobJob Time(hours)Due Date(hours)a 3.5 7b 2.0 6c 4.5 18d 5.0 22e 2.5 4f 6.0 20Eight jobs have arrived in the following order: Job Processing Time Due Date 1 7 23 2 3 9 3 5 8 4 2 11 5 6 16 6 9 18 7 14 40 8 4 31 Find and compare the performance measures for the following sequencing rules using the Excel Sequencing template. Round your answers to two decimal places. Process in the order they have arrived Flow Time Lateness Tardiness AverageSEE MORE QUESTIONS