For two random variables XXX and YYY with E[X]=2,E[Y]=3E[X]=2, E[Y]=3E[X]=2,E[Y]=3 and Var(X)=1,Var(Y)=2Var(X)=1, Var(Y)=2Var(X)=1,Var(Y)=2, if the covariance Cov(X,Y)=0.5Cov(X, Y) = 0.5Cov(X,Y)=0.5, what is E[XY]E[XY]E[XY]?
6.0
6.5
5.5
7.0