A machine produces parts used in cars. A sample of 25 parts was taken. The average length

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A machine produces parts used in cars. A sample of 25 parts was taken. The average length in the sample was 15.95 in. with a sample variance of 0.4 in..

(a) Construct a 95 % confidence interval for the population variance.

(b) Construct a 99 % confidence interval for the population variance.

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Statistics For Business And Financial Economics

ISBN: 9781461458975

3rd Edition

Authors: Cheng Few Lee , John C Lee , Alice C Lee

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Question Posted: Feb 17, 2024 11:37 PM

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A machine produces parts used in cars. A sample of 25 parts was taken. The average length

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Statistics For Business And Financial Economics

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