OPERATIONS MANAGEMENT (LL) W/CONNECT
OPERATIONS MANAGEMENT (LL) W/CONNECT
14th Edition
ISBN: 9781265502942
Author: Stevenson
Publisher: MCG CUSTOM
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Chapter 7, Problem 11P
Summary Introduction

To determine: The number of observations needed.

Introduction: The amount of the dependency on human effort by an organization in terms of achieving its goals is given by the work design. It is directly linked to the productivity of an organization where good work design helps in achieving high productivity.

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How 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?
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.).
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?

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OPERATIONS MANAGEMENT (LL) W/CONNECT

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