2.18 If the mean of a population is 250 and its standard deviation is 20, approximately what...

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2.18 If the mean of a population is 250 and its standard deviation is 20, approximately what proportion of observations is in the interval between each pair of values?

a. 190 and 310

b. 210 and 290

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Statistics For Business And Economics

ISBN: 9780273767060

8th Global Edition

Authors: Paul Newbold, Mr William Carlson, Ms Betty Thorne

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Question Posted: Sep 23, 2024 08:01 AM

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2.18 If the mean of a population is 250 and its standard deviation is 20, approximately what proportion of observations is in the interval between each pair of values? a. 190 and 310 b. 210 and 290
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2.18 If the mean of a population is 250 and its standard deviation is 20, approximately what...

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Statistics For Business And Economics

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