The table below gives the points scored on a word game by years of education of the player. Years of Education, x 8 11 12 15 16 Game Score, y 212 215 224 227 236 a) Find the least-squares regression line for these data. Interpret the slope. Round your coefficients to 2 decimal places. y = kx + b, wherek = i and b = i The slope means that for every extra year of education, a player can expect to score more points. b) Estimate to 2 decimal places the mean square of the residuals. The mean square of the residuals is