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 15P
a)
Summary Introduction
To determine: To find the standard time for the operation
Introduction: Time study is the basis that helps to set the standard time; it would time a sample of the performance of the worker.
b)
Summary Introduction
To determine: Thestandard time for the operation
Introduction: Time study is the basis that helps to set the standard time; it would time a sample of the performance of the worker.
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2.A job had an observed time of five minutes, a performance rating of .70, and an allowance factor of 20 percent of job time. Twenty cycles were timed. Standard time for the job in minutes is:
Refer to Problem (If Charlene Brewster has times of 8.4, 8.6, 8.3, 8.5, 8. 7, and 8.5 and a performance rating of I 10%, what is the normal time for this operation? Is she faster or slower than normal?).a) If t he allowance factor is 15%, what is the standard time for this operation?b) If the allowance factor is 18% and the performance rating is now 90%, what is the standard time for this operation?
How many observations should a time study analyst plan for in an operation that has a standard deviation of 1.1 minutes per piece? The goal is to estimate the mean time per piece to within 0.4 minutes, with a confidence of 95.5 percent. (Do not round intermediate calculations. Round up your final answer to the next whole number.).
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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- A widget assembly process was timed for 75 cycles and had an average of 1.5 minutes per piece. The performance rating was 95%, and workday allowances are 10 percent. Determine the following: a) Observed time b) Normal time c) Standard time d) How might this information be used?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_forwardHow many observations should a time study analyst plan for in an operation that has a standard deviation of .4 minutes per piece if the goal is to estimate the mean time per piece to within .1 minute with a confidence of 95.5 percent?arrow_forward
- How many observations should a time study analyst plan for in an operation that has a standard deviation of 1.5 minutes per piece if the goal is to stimate the mean time per piece to within .4 minute with a confidence of 95.5 percent?arrow_forwardA hotel housekeeper, Alison Harvey, was observed five times on each of four task elements, as shown in the following table. On the basis of these observations, find the standa rd timefor the process. Assume a I 0% a llowance factor.arrow_forwardIf the normal time is 1.30 min for a repetitive task that produces one work unit per cycle, and the company uses a PFD allowance factor of 12%, determine (a) the standard time for the task and (b) how many work units are produced in an 8-hour shift at standard performance.arrow_forward
- Based on a careful work study in the Hofstetter Corp., the results shown in the following table have been observed: a) Compute the normal time for each work element.b) If the allowance for this type of work is 15%, what is the standard time?c) How many observations are needed for a 95% confidence level within ±5% accuracy? (Hint: Calculate the sample size of each element.)arrow_forwardA job was timed for 60 cycles and had an average of 1.25 minutes per piece. The performance rating was 95 percent, and workday allowances are 9 percent. Determine each of the following: a. Observed time. (Round your answer to 2 decimal place.) Observed time minutes b. Normal time. (Round your answer to 2 decimal places.) Normal time minutes c. Standard time. (Round your answer to 2 decimal places.) Standard time minutesarrow_forwardSuppose Charlene Brewster has times (in seconds) of 8.3, 8.5, 8.4, 8.4, 8.6, 8.6 and a performance rating of 110%. a) For a given allowance factor of 15%, the standard time for the operation = ? seconds (round your response to two decimal places).arrow_forward
- List and explain the types of jobs today that would require time and motion studies to be a factor? Would any additional skills be required to be taught? Provide examples.arrow_forwardErgonomics problem A work measurement analyst in the Electrical Company took 10 observations (for each element) of an operation job. The operation consists of four elements of work. Result of observation was shown in a Table attached. a. Determine the standard time and standard output if the total allowance time is 12% b. Check whether number of observation is sufficient or not for a 95 percent confidence level and 5 percent significant level.arrow_forwardA time study analyst timed an assembly operation for 30 cycles, and then computed the average time per cycle, which was 18.75 minutes. The analyst assigned a performance rating of .96, and decided that an appropriate allowance was 15 percent. Assume the allowance factor is based on the workday. Determine the following: the observed time (OT), the normal time (NT), and the standard time (ST).arrow_forward
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