Let's say that the standard error of the prediction equals 3.10. If the scores are normally distributed around the regression line, then approximately 95% of the predictions will be within _______ of being correct.

Let's say that the standard error of the prediction equals 3.10. If the scores are normally distributed around the regression line, then approximately 68% of the predictions will be within _______ of being correct.

Let's say that in computing the regression equation that b=2.21 and a=1.38. compute the predicted value for Y when X = 4.

Y' = ?