4.5-4. Let X and Y have a bivariate normal distribution with μx Find = = 75, µy = 5, σ = 144, σ = 225, and p = 0.6. με (a) E(YX=76). (b) Var(YX = 76). (c) P(Y≤ 90, |X = 76). 'Χ

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