Question as attached.

3. A market research firm is studying the relationship between monthly expenditures for a household (y in RM) within two factors: The mortgage payment for the household (x1 in RM) and the value of the family car (x2 in RM). A random sample of 4 households revealed the following data: Monthly Mortgage Car Expenditures Payment (X1) Value (X2) (y) 3552 656 7800 2520 568 5100 3384 416 10500 4020 504 9500 a) Calculate y , x, and &, - (3) b) Complete the following table by determine the values of ddz, di', dz and didz. (6) P d dd dd, ddz did 183.5 120 -415 33672.25 22020 14400 -848.5 31 -3125 719952.25 27152 1024 15.5 -120 2175 240.25 -1860 14400 651.5 -32 1275 378840.15 -20848 1024 c) Perform a multiple regression analysis for the data to obtain the estimated values for the parameters f ., P 1 and pz. (11)