A time study was conducted on a job that contains four elements. The observed times and performance

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A time study was conducted on a job that contains four elements. The observed times and performance ratings for six cycles are shown in the following table.

OBSERVATIONS (minutes per cycle)

Element Performance Rating 1 2 3 4 5 6 1 90% 0.44 0.50 0.43 0.45 0.48 0.46 2 85 1.50 1.54 1.47 1.51 1.49 1.52 3 110 0.84 0.89 0.77 0.83 0.85 0.80 4 100 1.10 1.14 1.08 1.20 1.16 1.26

a. Determine the average cycle time for each element.

b. Find the normal time for each element.

c. Assuming an allowance factor of 15 percent of job time, compute the standard time for this job.

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Operations Management

ISBN: 9781260575712

14th Edition

Authors: William J Stevenson

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