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1.Suppose that X is a normal random variable with mean 5. a. If P[X > 9] = 0:3, approximately what is Var(X)? b. Use your

1.Suppose that X is a normal random variable with mean 5.

a. If P[X > 9] = 0:3, approximately what is Var(X)?

b. Use your answer in a. to nd P[1

2.Let X have a cumulative distribution function as screenshot

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