adOrmaPem6r
2021-11-10
Answered

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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Ched1950

Answered 2021-11-11
Author has **21** answers

Given: X is a normal random variable with mean

To find: variance of X

Solution: Let

Thus variance of X is

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If X is a normal random variable with parameters

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and

, compute P[X>5]

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