Use this regression model to test (at the 5% level of significance) if the average increase in price for a 1 square foot increase in floor area is less than $320 per square foot.

Variable: Price Multiple Regrunion for Price Multiple Adjusted Std. Err. of ROWH R R-Square R-square Eatinute Outliers Ignored 0.9346 0.8735 0.8638 49569.26433 Degrees of Sum of Mem of ANOVA Table Freedom Squares Squares p Value Explained 9 2.00152E+12 2.27391E+11 90.50925018 Unexplained 118 2.89939E+11 2457111966 Standard Coefficient t Value p Value Confidence Interyd $5% Argremion Table Error Lower Upper Constant -75.68266609 41272.55129 0.001711404 0.9986 87648.37378 87497.00845 Soft 276.874837 28.27983231 9.807881039