Independent random variable

Reference no: EM132917627

Question: Given that X₁,X₂,X₃, and X₄ are independent random variable with mean 2 and variance 4, find E(Y) and E(Z) for : Y=3X₄-X₁+(0.2)X₃ Z= X₂+7X₃-9X₁

Reference no: EM132917627

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