Question: Let Z denote a standard normal random variable. (a)Find P(-1.23 < Z < 2.45) (b)Find a real number k with P(-k < Z < k)

Let Z denote a standard normal random variable. (a)Find P(-1.23 < Z < 2.45) (b)Find a real number k with P(-k < Z < k) = 0.8500

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