Advanced Math Archive: Questions from August 12, 2023
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Sean Y1, Y2 e Y3 variables aleatorias, donde E(Y1) = 1,E(Y2) =
2,E(Y3) = −1, Var(Y1) = 1, Var(Y2) = 3, Var(Y3) ) = 5, Cov(Y1, Y2)
= −0.4, Cov(Y1, Y3) = 1/2 y Cov(Y2, Y3) = 2. Encuentra la varianza
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