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5. The means, standard deviations, and covariance for random variables X, Y, and Z are given below. Ux= 3, uy = 5, uz = 7 Ox=

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Var(T)=206

T- X-2y +32 Vay T - vai (x) + 4 Var (4) + a Quar (2) - 2 couley) +3 cov(x, 2) - 6 couly, 2) 2 + 4 (32) +9 (42) -2(1)+3 (3) -6

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