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Random Variablesmedium
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Let XXX and YYY be independent random variables. If E[X]=2E[X]=2E[X]=2, Var(X)=1Var(X)=1Var(X)=1, E[Y]=3E[Y]=3E[Y]=3, and Var(Y)=2Var(Y)=2Var(Y)=2, what is Var(2X−Y)Var(2X - Y)Var(2X−Y)?