Pearson eText Principles of Operations Management: Sustainability and Supply Chain Management -- Instant Access (Pearson+)
Pearson eText Principles of Operations Management: Sustainability and Supply Chain Management -- Instant Access (Pearson+)
11th Edition
ISBN: 9780135639221
Author: Jay Heizer, Barry Render
Publisher: PEARSON+
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Chapter 17, Problem 5P

a)

Summary Introduction

To determine: The percent of failues.

b)

Summary Introduction

To determine: The number of failures per unit hour.

c)

Summary Introduction

To determine: The mean time between failures at this point in testing.

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A manufacturer of disk drives for notebook computers wants an MTBF of at least 45,000 hours. Recent test results for 10 units were one failure at 10,000 hours, another at 25,000 hours, and two more at 45,000 hours. The remaining units were still running at 50,000 hours. Determine the following: a) Percent of failures b) Number of failures per unit-hour c) MTBF at this point in the testing
Which errors manifest most often during performance testing?
15) Given this three-component system and associated reliabilities What is the system reliability? Group of answer choices a) 0.4772 b) 0.0068 c) 0.5228 d) 0.9225 e) 0.9933
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