For a population with a standard deviation of = 20, how large a sample is necessary

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For a population with a standard deviation of σ = 20, how large a sample is necessary to have a standard error that is:
a. less than or equal to = points?
b. less than or equal to 2 points?
c. less than or equal to 1 point?

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Essentials Of Statistics For The Behavioral Sciences

ISBN: 9781133956570

8th Edition

Authors: Frederick J Gravetter, Larry B. Wallnau

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Question Posted: Sep 22, 2015 08:54 AM

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For a population with a standard deviation of = 20, how large a sample is necessary

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Essentials Of Statistics For The Behavioral Sciences

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