Q. No. 4 From the following table giving the quantity demanded (Y), its price (Xi) and consumers income (X2) from 2010 to 2019, (a) Estimate regression equation (demand equation) of Y on X, and X2. (03) (b) Test at the 5% level of statistical significance of the slope parameters. (01) (c) Find the coefficient of determination (R2) (01) Years Y X1 X2 2010 72 $10 2000 2011 81 9 2100 2012 90 10 2210 2013 99 9 2305 2014 108 8 2407 2015 126 7 2500 2016 117 7 2610 2017 117 9 2698 2018 135 6 2801 2019 144 4 2905