Guest Session: 1 Question Remaining. Create Account to save progress.
Login
Random Variablesmedium
0:00.0

Consider two variables XXX and YYY with Var(X)=4,Var(Y)=9Var(X)=4, Var(Y)=9Var(X)=4,Var(Y)=9 and Cov(X,Y)=2Cov(X, Y) = 2Cov(X,Y)=2. What is the variance of Z=X−3YZ = X - 3YZ=X−3Y?