Dissatisfied with the results of the omnibus ANOVA test from Problem 5, a student generates a post-hoc test to examine precisely which groups differ from each other, on average, on political ideology. Table 11.13 shows the results of Tukey’s test.

a. According to Table 11.13, which particular mean differences are statistically significant? How can you tell?

b. What do the results tell us about the “Harry Potter” effect on political ideology of millennials?