The normal time for the overall process minutes (round your response to two decimal places). %3D
The normal time for the overall process minutes (round your response to two decimal places). %3D
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Transcribed Image Text:Installing mufflers at the O'Sullivan Garage in Golden, Colorado, involves five work elements. Jill O'Sullivan has timed workers performing these tasks seven times, with
the results shown in the following table.
Performance
Observation (minutes)
Element
Rating
3
4
5
6
7
Select correct muffler
105 %
6
4
15*
4
Remove old muffler
85 %
8
7
7
Weld/install new muffler
105 %
14
15
14
11
14
17
12
Check/inspect work
Complete paperwork
95%
2
4
25*
4
4
2
17*
135 %
6
7
7
6
7
*Employee has lengthy conversations with boss (not job related).
By agreement with her workers, Jill allows a 12% fatigue factor and a 12% personal-time factor. To compute the standard time for the work operation, Jill excludes all
observations that appear to be unusual or nonrecurring. She does not want an error more than 5%. (Round all intermediate calculations to two decimal places before
proceeding with further calculations.)
The normal time for the overall process =
minutes (round your response to two decimal places).
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