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(a) (1.5 pts) Let Z be standard normal. Find P(Z 20) = 0.1093 (c) (4 pts) A random variable X is normally distributed with unknown

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(a) (1.5 pts) Let Z be standard normal. Find P(Z 20) = 0.1093 (c) (4 pts) A random variable X is normally distributed with unknown mean [,5 and variance 02. If P(X > 9.5) = 0.0039 and P(X

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