The table below shows a partial computer output for a real estate data for 50 residences that we wish to determine how house size is inuenced by family income, family size, and education of the head of household. House size is measured in hundreds of square feet, income is measured in thousands of dollars, and education is measured in years. SUMMARY OUTPUT Regression Statistics Multiple R 0.865 Adjusted R 0.726 Square Standard Error - Find the lower end point in a 95% condence interval for the change in the mean house size in square foot, for a unit change in family income, assuming that the other predictors remain unchanged