Lifetred, Inc., makes automobile tires that have a mean life of 60,000 miles with a standard deviation

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Lifetred, Inc., makes automobile tires that have a mean life of 60,000 miles with a standard deviation of 2500 miles.

a. What fraction of tires s expected to survive beyond 66,250 miles?

b. What fraction will survive fewer than 57,000 miles?

c. Sketch the reliability function?

d. What length of warranty is needed so that no more than 10 percent of the tires will be expected to fail during the warranty period?

Related Book For answer-question

Business Statistics

ISBN: 978-0321930675

2nd edition

Authors: Robert A. Donnelly

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Posted Date: Jan 09, 2021 05:00 AM

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Lifetred, Inc., makes automobile tires that have a mean life of 60,000 miles with a standard deviation

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Given Mean 4 6o o00 miles Stdeu o 2500 mil... View the full answer

Business Statistics

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