How large a sample must be taken from a normal pdf where E(Y) = 18 in order

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How large a sample must be taken from a normal pdf where E(Y) = 18 in order to guarantee that has a 90% probability of lying somewhere in the interval [16, 20]? Assume that σ = 5.0.

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Introduction To Mathematical Statistics And Its Applications

ISBN: 9780321693945

5th Edition

Authors: Richard J. Larsen, Morris L. Marx

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Question Posted: Dec 20, 2015 03:35 AM

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How large a sample must be taken from a normal pdf where E(Y) = 18 in order

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în =Y, =

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P16 y 20 090 ...View the full answer

Introduction To Mathematical Statistics And Its Applications

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