In a large city it was found that summer electricity bills for single family homes followed a

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In a large city it was found that summer electricity bills for single family homes followed a normal distribution with standard deviation $100. A random sample of 25 bills was taken.

(a) Find the probability that the sample standard deviation is less than $75.

(b) Find the probability that the sample standard deviation is more than $150.

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Statistics For Business And Economics

ISBN: 9780131815957

4th Edition

Authors: Paul Newbold

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Question Posted: Oct 31, 2024 06:00 AM

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In a large city it was found that summer electricity bills for single family homes followed a

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Statistics For Business And Economics

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