7. Table 12 29 is a contingency table summarizing responses on political ideology in the 1991 General Social Survey by race and gender. Table 12.30 shows results of using SAS software to conduct an analysis of variance comparing the four groups, using the category labels for the ideology scores.

a) Show all steps of a one-way ANOVA to test the hypothesis of equal population micans. Report the P-value and interpret.

b) The printout does not show the actual Bonferroni confidence intervals, but it shows the 1-score used for simultaneous 95% intervals. Show how to construct the one comparing the first two groups TABLE 12.29 Political Ideology Racc Gender 1 2 3 4 5 6 7 White Female 9 51 Male 9 35 Black Female 3 7 Male 1 8 6869 63 216 57 63 11 50 127 67 55 14 16 30 11 11 3 11 = 20