7.27. Refer to Commercial properties Problem 6.16. A. Fit first-order linear regression model (6. I) for relating rental rates (1 ) to property age (X,) wind size ( X,). State the fitted regression function. h. Compuc the estimated regression coefficients for property age and size with the cone- spording coefficients obtained in Problem 6. ISc. What do you find? c. Does Se(X) equal SSR(X X ) here? Does SSA(X , ) equal SSR(X,(X,)? d. Refer to the correlation mmatrix obtained in Problem 6.18b. What bearing does this have ac your finding in parts (b) and (c)