EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
10th Edition
ISBN: 9780134183848
Author: HEIZER
Publisher: PEARSON CO
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Chapter 10, Problem 37P
Summary Introduction
To determine: The delay and
Introduction: Sample size refers to the number of observations that are necessary to determine the cycle time. The major goal of sample size is to determine inferences about the population from the observations.
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Supervisor Tom Choi at Tempe Equipment Company is concerned that material is not arriving as promptly as needed at work cells. A new kanban system has been installed, but there seems to be some delay in getting the material moved to the work cells so that the job can begin promptly. Choi is interested in determining how much delay there is on the part of his highly paid machinists. Ideally, the delay would be close to zero. He has asked his assistant to determine the delay factor among his 10 work cells. The assistant collects the data on a random basis over the next 2 weeks and deter- mines that of the 1,200 observations, 105 were made while the oper- ators were waiting for materials. Use a 95% confidence level and a {3% acceptable error. What report does he give to Choi?
Supervisor Tom Choi at Tempe Equipment Companyis concerned that material is not arriving as promptly as needed atwork cells. A new kanban system has been insta lled, but there seemsto be some delay in getting the material moved to the work cells sothat the job can begin promptly. Choi is interested in determininghow much delay there is on the part of his highly paid machinists.Ideally, the delay would be close to zero. He has asked his assistantto determine the delay factor among his 10 work cells. The assistantcollects the data on a random basis over the next 2 weeks anddetermines that of the 1,200 observations, 105 were made while theoperators were waiting for materials. Use a 95% confidence leveland a ±3% acceptable error. What report does he give to Choi?
Drew Rosen Automation Company estimates the data entry and verifying times for four jobs as follows: In what order should the jobs be done if the company has one operator for each job? Illustrate the time-phased flow of this job sequence graphically.
Chapter 10 Solutions
EP PRIN.OF OPERATIONS MGMT.-MYOMLAB
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