Given a normal random variable X with mean 20 and variance 9, and a random sample of

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Given a normal random variable X with mean 20 and variance 9, and a random sample of size n taken from the distribution, what sample size n is necessary in order that P(19.9 < X < 20.1) = 0.95?

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Probability & Statistics For Engineers & Scientists

ISBN: 9780130415295

7th Edition

Authors: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying

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Question Posted: Feb 04, 2011 05:17 AM

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Given a normal random variable X with mean 20 and variance 9, and a random sample of

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Probability & Statistics For Engineers & Scientists

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