A machine produces parts with lengths that are normally distributed with 0.5. A sample of 10 parts

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A machine produces parts with lengths that are normally distributed with 0.5. A sample of 10 parts has a mean length of 75.92. The worker stated that the quality parts should average 78.23.

a. Find the point estimate for μ .

b. Find the 98% confidence maximum error of estimate for μ .

c. Find the 98% confidence interval for μ .

d. State the null and alternative hypotheses.

e. Is there sufficient evidence to show that the machine produces quality parts?

Related Book For answer-question

Introduction to Probability

ISBN: 978-0716771098

1st edition

Authors: Mark Daniel Ward, Ellen Gundlach

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Posted Date: Jul 01, 2022 08:45 AM

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A machine produces parts with lengths that are normally distributed with 0.5. A sample of 10 parts

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a The point estimate for is the mean length of machine ... View the full answer

Introduction to Probability

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