Question: 9.5.4 Let random variable X have a N(p, a2) distribution. Find: (i) p if a2 = 2 and P ( X 5 12) = 0.72.

9.5.4 Let random variable X have a N(p, a2) distribution. Find: (i) p if a2 = 2 and P ( X 5 12) = 0.72. (ii) a2 if p = 2 and P(X 25) = 0.39.

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