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1. Let X and Y be random variables with expected values u = lx = My, variances o2 = ož = o . Let Z=1+2X+Y. (a) Find the expected value of Z. (b) Find the variance of Z, assuming X and Y are uncorrelated.
1. Let X and Y be random variables with expected values u = lx = My, variances o2 = ož = o . Let Z=1+2X+Y. (a) Find the expected value of Z. (b) Find the variance of Z, assuming X and Y are uncorrelated.
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