Question: Given two random variables, XA and XB, with corresponding means A and B and standard deviations A and B, prove that the variance of XA
Given two random variables, XA and XB, with corresponding means μA and μB and standard deviations σA and σB, prove that the variance of XA plus XB is![]()
GA+B = 0 +ob +2PABGA OB
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First we note that the expected value of XA plus XB is just the sum of the means Substituting into ... View full answer
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