Principles Of Operations Management
Principles Of Operations Management
11th Edition
ISBN: 9780135173930
Author: RENDER, Barry, HEIZER, Jay, Munson, Chuck
Publisher: Pearson,
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Chapter 10, Problem 16P

a)

Summary Introduction

To determine: To find the average time for the operation

Introduction: Time study is the basis that helps to set the standard time; it would time a sample of the performance of the worker.

b)

Summary Introduction

To determine: Thenormal time for the operation

Introduction: Time study is the basis that helps to set the standard time; it would time a sample of the performance of the worker.

c)

Summary Introduction

To determine: To find the standard time for the operation

Introduction: Time study is the basis that helps to set the standard time; it would time a sample of the performance of the worker.

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Installing mufflers at the O'Sullivan Garage in Golden, Colorado, involves five work elements. Jill O'Sull ivanhas timed workers performing these tasks seven times, with the results shown in the following table:                                                                                                                                                By agreement with her workers, Jill allows a 10% fatigue factor and a 10% personal-time factor, but no time for delay. To compute standard time for the work operatio n, Jill excludes all observations that a ppear to be unusual or nonrecurring. She does not want an error of mo re than ±5%.a) What is the standard time for the task?b) How many observations are needed to assu re a 95% confidence level?
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