Return Submit 17 1 point Consider a classical linear regression model: Y - 81 + 82 X, + 1.;. Which of the following statements about the standard error of the estimated 31 is incorrect? O It is a measure of the precision of the estimated slope coefficient O A smaller standard error indicates a more precise estimate When you have more sample size, you may have a smaller standard error It is used to construct confidence intervals and perform hypothesis tests O All of the statements are correct 18 1 point Consider the model Y, = 81 + 82 X, + w/. Consider two linear unbiased estimators of 82: 8, which comes from the OLS method, and B, which does not come from the OLS method. What can we say for sure about the variance of the estimators, Var( B, ) and Var(#2 ) Var( B, )