12. Refer to the WWW data set (Problem 17). Using computer software, conduct and inter- pret an analysis of covariance using Y = political ideology. Prepare a report, presenting graphical, descriptive, and inferential analyses. using the predictors TABLE 13.19 Mcan Mean Adjusted Mean Group Age Income Income Married 44 40 30 Divorced 35 30 30 Single 26 20 30

a) religiosity and whether a vegetarian

b) college GPA. number of times a week reading a newspaper. opinion about abortion, and whether a vegetarian.