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Problem 2-6 A manager checked production records and found that a worker produced 180 units while working 40 hours. In the previous week, the same worker produced 123 units while working 30 hours. a. Compute Current period productivity and Previous period productivity.(Round your answers to 2 decimal places.) Current period productivity Units / hr Previous period productivity Units / hr ________________________________________ b. Did the worker’s productivity increase, decrease, or remain the same? (Round your intermediate calculations and final answer to 2 decimal places. Omit the “%” sign in your response.) Worker’s productivity by % 2-7 b. Suppose a new, more standardized procedure is to be introduced that will enable each employee to process one additional customer per day. Compute the expected labor and multifactor productivity rates for each unit.(Round your “Labor Productivity” answers to 1 decimal place and “Multifactor Productivity” answers to 4 decimal places.) Unit Labor Productivity (customers per day per worker) Multifactor Productivity (customers per dollar input) A B C D ________________________________________ Use Î±=.5 and Î²=.1, and TAF of 250 for period 5. Obtain forecasts for periods 6 through 10. (Round your intermediate calculations and final answers to 2 decimal places.) t Period TAFt 6 7 8 9 10 ________________________________________ 311 A manager of a store that sells and installs spas wants to prepare a forecast for January, February, and March of next year. Her forecasts are a combination of trend and seasonality. She uses the following equation to estimate the trend component of monthly demand: Ft = 100 + 2t, where t = 0 in June of last year. Seasonal relatives are 1.13 for January, 1.07 for February, and .92 for March. What demands should she predict? (Round your answers to 2 decimal places.) Month Forecast January of the next year February of the next year March of the next year ________________________________________ 12. Use the assignment method to obtain a plan that will minimize the processing costs in the following table under these conditions: WORKER A B C D E 1 14 18 20 17 18 2 14 15 19 16 17 Job 3 12 16 15 14 17 4 11 13 14 12 14 5 10 16 15 14 13 ________________________________________ a. The combination 2-D is undesirable. The sequence is . b. The combinations 1-A and 2-D are undesirable. The sequence is . 13. The following table shows orders to be processed at a machine shop as of 8:00 a.m. Monday. The jobs have different operations they must go through. Processing times are in days. Jobs are listed in order of arrival. Job Processing Time (Days) Due Date (Days) Remaining Number of Operations A 8 20 2 B 10 18 4 C 5 25 5 D 11 17 3 E 9 35 4 ________________________________________ a. Determine the processing sequence at the first work center using each of these rules: (1) First come, first served, (2) Slack per operation. Sequence for First come, first served Sequence for Slack per operation ________________________________________ b. Compute the effectiveness of each rule using each of these measures: (1) average completion time, (2) average number of jobs at the work center. (Round your answers to 2 decimal places.) First Come, First Served Slack per Operation Average completion time Average number of jobs ________________________________________ 14. The times required to complete each of eight jobs in a two-machine flow shop are shown in the table that follows. Each job must follow the same sequence, beginning with machine A and moving to machine B. TIME (hours) Job Machine A Machine B a 16 5 b 3 13 c 9 6 d 8 7 e 2 14 f 12 4 g 18 14 h 20 11 ________________________________________

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