The means, standard deviations, and covariances for random variables X, Y, and Z are given below. |x= 3, HY= 5, Uz=7 Ox=2, OY = 4, Oz=3 cov(X, Y) = 4, sox (X, Z) = -2, and çox. (Y,Z) = 1 Find the following for the random variable T as defined. T=3X-4Y2Z a. E(T) = b. Var (T) = c. Suppose the random variables X and Y are independent with variances of 4 and 5 respectively. Var (3X-7Y) =

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A: Since,

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A: Solution

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