It is known that the incomes of subscribers to a particular British magazine have a normal distribution

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It is known that the incomes of subscribers to a particular British magazine have a normal distribution with a variance of 49,000,000. A random sample of 41 subscribers is taken.

a. What is the probability that the sample standard deviation of their incomes is more than £5,000?

b. What is the probability that the sample standard deviation of their incomes is less than £9,000?

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Statistics For Business And Economics

ISBN: 9781292315034

9th Global Edition

Authors: Paul Newbold, William Carlson, Betty Thorne

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Question Posted: Nov 14, 2022 02:24 AM

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It is known that the incomes of subscribers to a particular British magazine have a normal distribution

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Statistics For Business And Economics

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