Complete the following worksheet and then use it to calculate the coefficient of determination. i Ii Yi (; -) (Yi - ) 1 15 160 173.323 1.750 144.000 2 13.5 220 193.166 448.000 2,304.000 3 16.5 140 153.480 342.990 1,024.000 4 14.5 190 179.937 62.996 324.000 5 17 120 146.865 631.768 2,704.000 6 16 160 160.094 141.753 144.000 7 13 190 199.781 771.784 324.000 8 18 150 133.636 1,471.796 484.000 9 10 12 200 15.5 190 213.009 166.708 1,681.738 784.000 28.005 324.000 Total The coefficient of determination (2) is According to the regression model, which of the following is the best estimate together with the 95 percent prediction interval of paint sales (in thousands of gallons) in a sales region where the selling price is $12.50? 206.385 2(19.292) 381.1352(3.416) 206.3852(3.416) 381.135 2(19.292) What is the price elasticity of demand at a selling price of $12.50? -0.05 -0.54 -0.80