What sample size is needed to estimate a population mean within 50 of the true mean

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What sample size is needed to estimate a population mean within ± 50 of the true mean value using a confidence level of 95%, if the true population variance is known to be 122,500?

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Business Statistics A Decision Making Approach

ISBN: 9780133021844

9th Edition

Authors: David F. Groebner, Patrick W. Shannon, Phillip C. Fry

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Question Posted: Dec 02, 2015 02:06 AM

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What sample size is needed to estimate a population mean within 50 of the true mean

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Step 1 Specify the desired margin of error The estimate i...View the full answer

Business Statistics A Decision Making Approach

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