Banning controversial sports team sponsors. Refer to the Journal of Marketing Research (October 2015) study of the impact of banning a controversial sponsor on a sports team’s success, Exercise 12.81 (p. 762). Recall that markets for English soccer clubs were classified as one of four types: (1) banned alcohol sponsors but now have other sponsors, (2) banned alcohol sponsors and now have no other sponsors, (3) did not ban alcohol sponsors but now have other sponsors, and (4) did not ban alcohol sponsors and now have no other sponsors. To assess the impact of an alcohol ban in a market, you fit a main effects model for the matching value loss 1y2 as a function of the qualitative independent variable market type. Conduct a complete residual analysis for the multiple regression model. Are the standard regression assumptions reasonably satisfied?