24.22 Is astrology scientific? In Exercise 24.9, you described the relationship between belief that astrology is scientific and amount of higher education. Is the observed association between these variables statistically significant? To find out, proceed as follows.

  1. (a) Add the row and column totals to the two-way table in Exercise 24.9 and find the expected cell counts. Which observed counts differ most from the expected counts?

  2. (b) Find the chi-square statistic. Which cells contribute most to this statistic?

  3. (c) What are the degrees of freedom? Use Table 24.1 to say how significant the chi-square test is. Write a brief conclusion for your study.