X, Y, and Z are random variables for which Ux= 3, UY= 2, |z=4 ox=2, Gy=6, oz = 3 cox(X,Y)= 2, cox (X, Z) = -3, and çox (Y,Z) = 5 T=X+2Y+3Z W=4X-2Y-Z a. Find the mean and variance of T. μT= b. Find the covariance of T and W. OTW= of=

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