9. A work operation consisting of three (3) elements has been subjected to a time study. The recorded observations are shown below. The allowance factor for personal time is 5%, delay is 5%, and fatigue is 10%. Determine the standard time for the work operations. Job Observation (in Minutes) Performance Element 1 2 3456 Rating (%) 0.1 0.3 0.2 0.9 0.2 0.1 0.8 0.6 0.8 0.5 3.2 0.7 0.5 0.5 0.4 0.5 0.6 0.5 A 90 110 80 10. The preliminary work sample of an operation indicates the following: what is the required sample size for a three (3) sigma with 4% accuracy. No. of times operator working 60 No. of times operator idle 40 11. PI Sumeguin, Inc. produces telephone system with built in TV screens. Its learning rate is 80%. a. If the first one took 56hrs, how long will it take the company to complete the 11th unit? b. How long will the 1st 11 systems take in total? c. If you are the purchasing agent, you are expected to buy units 12 through 15 of the new phone systems. What would be your expected cost for the units if company charges $30 for each labor hour? 12. Margarette Tire shop simulated the following data below. How much is his expected daily demand? Demand for Tires Frequency 10 1 20 40 3 60 4 40 5 30
9. A work operation consisting of three (3) elements has been subjected to a time study. The recorded observations are shown below. The allowance factor for personal time is 5%, delay is 5%, and fatigue is 10%. Determine the standard time for the work operations. Job Observation (in Minutes) Performance Element 1 2 3456 Rating (%) 0.1 0.3 0.2 0.9 0.2 0.1 0.8 0.6 0.8 0.5 3.2 0.7 0.5 0.5 0.4 0.5 0.6 0.5 A 90 110 80 10. The preliminary work sample of an operation indicates the following: what is the required sample size for a three (3) sigma with 4% accuracy. No. of times operator working 60 No. of times operator idle 40 11. PI Sumeguin, Inc. produces telephone system with built in TV screens. Its learning rate is 80%. a. If the first one took 56hrs, how long will it take the company to complete the 11th unit? b. How long will the 1st 11 systems take in total? c. If you are the purchasing agent, you are expected to buy units 12 through 15 of the new phone systems. What would be your expected cost for the units if company charges $30 for each labor hour? 12. Margarette Tire shop simulated the following data below. How much is his expected daily demand? Demand for Tires Frequency 10 1 20 40 3 60 4 40 5 30
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:9. A work operation consisting of three (3) elements has been subjected to a time study. The
recorded observations are shown below. The allowance factor for personal time is 5%, delay is
5%, and fatigue is 10%. Determine the standard time for the work operations.
Observation (in Minutes)
Element 1 2 456 Rating (%)
0.1 0.3 0.2 0.9 0.2 0.1
0.8 0.6 0.8 0.5 3.2 0.7
0.5 0.5 0.4 0.5 0.6 0.S
Job
Performance
A
90
110
80
10. The preliminary work sample of an operation indicates the following: what is the required sample
size for a three (3) sigma with 4% accuracy.
No. of times operator working 60
No. of times operator idle
40
11. PJ Sumeguin, Inc. produces telephone system with built in TV screens. Its learning rate is 80%.
a. If the first one took 56hrs, how long will it take the company to complete the 11th unit?
b. How long will the 1st 11 systems take in total?
c. If you are the purchasing agent, you are expected to buy units 12 through 15 of the new
phone systems. What would be your expected cost for the units if company charges $30
for each labor hour?
12. Margarette Tire shop simulated the following data below. How much is his expected daily
demand?
Demand for Tires Frequency
10
1
20
2
40
3.
60
4
40
5
30
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