Suppose that X is a normal random variable with mean 5. If P{X > 9} = .2,

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Suppose that X is a normal random variable with mean 5. If P{X > 9} = .2, approximately what is Var(X)?

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A First Course In Probability

ISBN: 9789332519077

9th Edition

Authors: Sheldon Ross

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Question Posted: Oct 22, 2015 02:54 AM

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Suppose that X is a normal random variable with mean 5. If P{X > 9} = .2,

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2 P X 5 9 5 PZ 4 where Z is a st...View the full answer

A First Course In Probability

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