Mathematics, 24.10.2020 17:40 jacamron

Let X, Y, and Z be random variables, and let Cov(⋅,⋅) denote the covariance operator as usual. Suppose that the variance of X is 0.7, Cov(X, Y) = 0.4, Cov(X, Z) = 1.2, and Cov(Y, Z) = 0.8. Find each of the following to two decimal places. (a) Cov(5Y, 6X)

(b) Cov(5Y + 3, 6X + 8Z)

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Let X, Y, and Z be random variables, and let Cov(⋅,⋅) denote the covariance operator as usual. Suppo...