If Cov(X,Y)=−12Cov(X, Y) = -12Cov(X,Y)=−12 and Var(X)=16Var(X) = 16Var(X)=16, what is the slope β1\beta_1β1 of the line YYY on XXX?
−0.75-0.75−0.75
−1.33-1.33−1.33
0.750.750.75
−0.5-0.5−0.5