Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 10, Problem 41P
Summary Introduction
To calculate: The normal time and standard time for the process.
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A work operation consisting of three elements has been subjected to a stopwatch time study. The recorded observations are shown in below table. By standard, the work time allowance for the operation is personal time 5%, raw materials delay 5%, and fatigue 10%.
Which job element works the slowest than its expected time?
Which job element works the fastest than its expected time?
What is the normal time for Job Element A?
What is the normal time for Job Element B?
What is the normal time for Job Element C?
What is the normal time of the work operation?
What is the standard time of the work operation?
Hint: remove unusual time
For a time study of a health insurance claims-adjusting process, the analyst uses the continuous method of recording times. The job is divided into four work elements. Shown in Figure are the performance rating factors, RF, and the continuous method recorded times, r, for each work element.a. Calculate the normal time for this job. b. Calculate the standard time for this job, assuming that the allowance is 20 percent of the normal time. c. What is the appropriate sample size for estimating the time for element 2 within {10 percent of the true mean with 95 percent confidence?
Omar is the Head of IT Systems and Applications at AAA corporation. His job has been redesigned to includeshifting him between jobs at regular intervals.
Specify the job design approach that is used in this case.
Chapter 10 Solutions
Principles Of Operations Management
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- Rocky’s Pre-Cast Shop is considering two different processes for completing Pre-Cast jobs. Process A uses one person to setup the job and do the pre-casting. If this approach is used, an experienced person can complete an average of 20 jobs per day. Process B uses two people. One person does the setup and the second person does the actual pre-casting. Setup on one job can be done while pre-casting is being completed on another but pre-casting must be completed on a job before the pre-cast machine can start processing the next. After some practice, this second process can be completed with a standard time of 10 minutes for setup and 15 minutes for actual pre-casting. In either case, assume an 8-hour day, 5 days per week, 250 days per year. 3. Assuming ideal conditions, what is the maximum capacity of process B? 4. How long would it take to process 200 jobs using process A (assume only one worker and one machine)? 5. If Rocky’s is primarily…arrow_forwardA hotel housekeeper, Alison Harvey, wasobserved five times on each of four task elements, as shownin the following table. On the basis of these observations, findthe standard time for the process. Assume a 10% allowancefactor.arrow_forwardWhen planning the sequence of steps for a process, why is it necessary to include an exception?arrow_forward
- A work operation consisting of three elements has been subjected to a stopwatch time study. The recorded observations are shown in the following table. By union contract, the allowance time for the operation is personal time 5%, delay 5%, and fatigue 10%. Determine the standard time for the work operation.arrow_forwardKarina Nieto works for New Products Inc., and one of hermany tasks is assigning new workers to departments. Thecompany recently hired six new employees and would likeeach one to be assigned to a different department. The em-ployees have completed a two-month training session ineach of the six departments from which they received theevaluations shown below (higher numbers are better).Determine how the new employees should be assigned todepartments so that overall performance is maximized.arrow_forwardRockness Recycling refurbishes rundown business students. The process uses a moving belt, which carries each student through the five steps of the process in sequence. The five steps are as follows: STEP DESCRIPTION TIME REQUIREDPER STUDENT 1 Unpack and place on belt 1.2 minutes 2 Strip off bad habits 1.0 minutes 3 Scrub and clean mind 1.5 minutes 4 Insert modern methods 0.8 minute 5 Polish and pack 1.0 minutes One faculty member is assigned to each of these steps. Faculty members work a 40-hour week and rotate jobs each week. Mr. Rockness has been working on a contract from General Eclectic, which requires delivery of 2,000 refurbished students per week. A representative of the human resources department has just called complaining that the company hasn’t been receiving the agreed-upon number of students. A check of finished goods inventory by Mr. Rockness reveals that there is no stock left. a. Calculate the maximum output for each step. b. Which step…arrow_forward
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