Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
13th Edition
ISBN: 9780135225899
Author: Jay Heizer, Barry Render, Chuck Munson
Publisher: PEARSON
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Question
Chapter 10, Problem 14DQ
Summary Introduction
To determine: The difference in time study when a machine operator drops equipment and you pick it up and hand it to him.
Introduction: Time study is taking a sample of an worker’s performance and using it as a base for setting up a standard time. The sample will involve a worker’s performance and overall working hours of the labour.
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The operator drops a part, which you pick up and handto him. Does this make any difference in a time study? Ifso, how?
5. The manager of Asombrado Bounty Office, Charles Badillo, estimates his employees are idle 25%of the time. With that problem, how many work samples are needed to consider within 3%accuracy and have 95.45% confidence level.
6. At ASP Micro Manufacturing, Inc. workers press semiconductor into predrilled slots on printed-circuit boards. Determine the normal time of the operation in seconds. The elemental motions for normal time used by the company are as follows:• Reach 6 inches for semiconductors 10.5 TMU• Grasp the semiconductors 8.0 TMU• Move semiconductor to printed-circuit board 9.5 TMU• Position semiconductor 20.1 TMU• Press semiconductor into slots 20.3 TMU• Move board aside 15.8 TMU
7. The semiconductor used in Costin Calculator has 5 components with the consistency of 90%, 95%,98%, 90%, and 99%, respectively. How reliable is one product of calculator?
A hospital administrator thinks that the X-ray equipment is only in use about 20 percent of the time. What number of observations in a work sampling study would be needed to estimate the true percentage of time to within 5 percent with a confidence of 98 percent?
Chapter 10 Solutions
Mylab Operations Management With Pearson Etext -- Access Card -- For Operations Management: Sustainability And Supply Chain Management (13th Edition)
Ch. 10 - Prob. 1DQCh. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Prob. 4DQCh. 10 - Prob. 5DQCh. 10 - Prob. 6DQCh. 10 - Prob. 7DQCh. 10 - Prob. 8DQCh. 10 - Prob. 9DQCh. 10 - Prob. 10DQ
Ch. 10 - Prob. 11DQCh. 10 - Prob. 12DQCh. 10 - Prob. 13DQCh. 10 - Prob. 14DQCh. 10 - Prob. 2PCh. 10 - Draw an activity chart for a machine operator with...Ch. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 1PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Prob. 23PCh. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 30PCh. 10 - Prob. 31PCh. 10 - Prob. 32PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Prob. 36PCh. 10 - Prob. 37PCh. 10 - Prob. 33PCh. 10 - Prob. 39PCh. 10 - Prob. 40PCh. 10 - Prob. 41PCh. 10 - Prob. 42PCh. 10 - Prob. 44PCh. 10 - Prob. 1CSCh. 10 - Prob. 2CSCh. 10 - Prob. 3CSCh. 10 - Prob. 4CSCh. 10 - Prob. 2.1VCCh. 10 - Prob. 2.2VCCh. 10 - Prob. 2.3VCCh. 10 - Prob. 2.4VCCh. 10 - Prob. 1.1VCCh. 10 - Prob. 1.2VCCh. 10 - Prob. 1.3VC
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Similar questions
- If an average worker could be identified, what advantage would there be in using that person for a time study? What are some reasons why an average worker might not be studied. Explainarrow_forwardWhat are the trade offs in choosing between time study and work sampling for work measurement.arrow_forwardHow to Work sampling compared with stopwatch time study?arrow_forward
- State and describe some of the limitations of time study method ?arrow_forwardDescribe some of the limitations of time study method ?arrow_forwardA Methods and Measurements Analyst needs to develop a time standard for a certain task. The task involves use of a ruler, square, and portable electric saw to mark and cut the "notch" in a rafter (a standard carpentry task of home construction). In a preliminary study, he observed one of his workers performing this task five times. The observations were made in an air-conditioned, well-lit training facility, at ground level, with all tools and equipment clean and readily available. Observation: 1 2 3 4 5 Task time (seconds): 82 74 80 83 76 a. What is the actual average time for this task? b. What is the normal time for this task if the employee worked at a 20% faster pace than is typical for adequately trained workers? c. What is standard time for this task if allowances sum to 14%? d. If the analyst then thought more carefully about his experiment and decided that the allowances needed to be increased to match the real (outside, not air-conditioned)…arrow_forward
- What role does data collection and analysis play in work measurement?arrow_forwardThe results of a time study to perform a quality control test are shown in the following table: *Disregard employee is smoking a cigarette (included in personal time). The allowance factor is given to be 25%. a) The normal time for the complete operation = b) The standard time for this process = Performance Observation (minutes per cycle) Element Rating 1 2 3 4 5 1 95% 1.5 1.8 23 2 110% 0.8 0.5 90% 0.5 0.4 4 85% 0.6 0.9 8549 1.8 1.9 1.4 0.6 3.7* 0.6 0.6 0.4 0.4 0.7 0.7 0.7 minutes (round your response to two decimal places). minutes (round your response to two decimal places).arrow_forwardClaudine Soosay recorded the following times assembling a watch: Observation No. 1 2 3 4 5 6 7 8 Performance rating is given as 95%. a) The average time of Claudine for the operation = Time (minutes) 0.11 0.09 0.11 0.09 0.15 0.10 0.09 0.10 Observation No. 9 10 11 12 13 14 15 16 minutes (round your response to three decimal places). Time (minutes) 0.11 0.09 0.11 0.10 0.11 0.12 0.14 0.10arrow_forward
- How can the time for a machine operator be classified,Turns between each job and often between work Go for stock, off the machine?arrow_forwardHow many work cycles should be timed to estimate the average cycle time to within 2 percent ofthe sample mean with a confidence of 99 percent if a pilot study yielded these times (minutes):5.2, 5.5, 5.8, 5.3, 5.5, and 5.1? The standard deviation is .253 minutes per cycle.arrow_forwardTim Nelson's job as an inspector for La-Z-Boy is to inspect 130 chairs per day.a) If he works an 8-hour day, how many minutes is be allowed for each inspection (i.e., what is his "standard time")?b) If he is a llowed a 6% fat igue a llowance, a 6% delay allowance,and 6% for personal time, what is the normal time that he is assumed to take to perform each inspection?arrow_forward
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