Question: Var ( aX + bY ) = Multiple choice question. a 2 Var ( X ) + b 2 Var ( Y ) + 2

Var(aX+bY)=
Multiple choice question.
a2Var(X)+b2Var(Y)+2abCov(X,Y)
Var(X)+Var(Y)+2Cov(X,Y)
aE(X)+bE(Y)

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