Big heads? The army reports that the distribution of head circumference among male soldiers is approximately Normal

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Big heads? The army reports that the distribution of head circumference among male soldiers is approximately Normal with mean 22.8 inches and standard deviation 1.1 inches. Use the 68–95–99.7 rule to answer these questions.

(a) Between what values do the middle 95% of head circumferences fall?

(b) What percentage of soldiers have head circumferences greater than 23.9 inches?

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Statistics Concepts And Controversies

ISBN: 9781429277761

7th Edition

Authors: David S Moore, William I Notz

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Question Posted: Jul 22, 2024 07:04 AM

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Big heads? The army reports that the distribution of head circumference among male soldiers is approximately Normal

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Statistics Concepts And Controversies

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