4-6. A company conduct a work sampling study to estimates the proportion of time their workers on idle during the process. The table below shows the data. Observation Times busy Times idle Total period observation Monday Tuesday Wednesday Thursday Friday Total 1 7 7 7 7 9 11 10 32 10 42 (a) What is the estimated percentage of idle time? (Ans. 0.238) (b) Based on the initial results, approximately how many more observations would you require estimating the actual percentage of idle time to within 5% with a confidence of 98%? (Ans. 352 more observations)

4-6. A company conduct a work sampling study to estimates the proportion of time their workers on idle during the process. The table below shows the data. Observation Times busy Times idle Total period observation Monday Tuesday Wednesday Thursday Friday Total 1 7 7 7 7 9 11 10 32 10 42 (a) What is the estimated percentage of idle time? (Ans. 0.238) (b) Based on the initial results, approximately how many more observations would you require estimating the actual percentage of idle time to within 5% with a confidence of 98%? (Ans. 352 more observations)

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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17-6 Hiring The HR department is trying to fill a vacant position for a job with a small talent pool. Valid applications arrive every week or so, and the appicants all seem to bring differnt levels of expertise. For each applicant, the HR manager gathers information by trying to verify various claims on resumes, but some doubt about fit always lingers when a decisions to hire or not is to be made. What are the type I and II decision error cost? Which decision error is more likely to be discovered by the CEO? How does this affect the HR manager's hiring decisions?
a) Mention the different job settings offered in a job and give two examples each for any two type
Please do fast ASAP
The observation that the company has been receiving an increased number of complaints about employees, including "unsmiling and unhelpful relationship manager” and “hassled-looking teller", represents: The observation that the company has been receiving an increased number of complaints about employees, including "unsmiling and unhelpful relationship manager” and “hassled-looking teller", represents: A performance gap An opportunity gap Both (a) and (b) None of the above.
Ques. Which one of the following refers to the length of time needed to complete a job? (a) Work sampling methods (b) Work measurement (c) Job design (d) Methods analysis
2. CH 10: The table below includes the time (in minutes) that it took a worker to complete a single task that an analyst collected while performing a stopwatch time study. Use the information provided in this table to answer the following questions. You must show your work for credit, and please round all answers to two (2) decimal places. Observation Time 1 2 2 2.5 3 2 4 3 5 3.5 If the worker observed was 10% faster than average, what is the normal time? If an allowance factor of 15% of the workday is used, what is the standard time? 6 2
6. At ASP Micro Manufacturing, Inc. workers press semiconductor into predrilled slots on printed- circuit boards. Determine the normal time of the operation in seconds. The elemental motions for normal time used by the company are as follows: • Reach 6 inches for semiconductors • Grasp the semiconductors • Move semiconductor to printed-circuit board 10.5 TMU 8.0 TMU 9.5 TMU Position semiconductor 20.1 TMU Press semiconductor into slots 20.3 TMU • Move board aside 15.8 TMU