Suppose that the conditions for regression are met and the true regression line relating y= weight of tomatoes produced per plant (in lbs.) to x amount of fertilizer (in oz.) is y= 10+ 2.5x and that the standard deviation of the residuals is 4 lbs. If a large number of tomato plants are given 2 oz. of fertilizer, about what percent of these plants will yield more than 20 lbs. of tomatoes?
