*19.13 Students are classified according to religious preference (Buddhist, Jewish, Protestant, Roman Catholic, or Other) and political affiliation (Democrat, Republican, Independent, or Other). RELIGIOUS PREFERENCE AND POLITICAL AFFILIATION POLITICAL AFFILIATION RELIGIOUS PREFERENCE BUDDHIST JEWISH PROTESTANT ROM. CATH. OTHER Democrat 30 30 40 60 40 Republican TOTAL 10 10 40 20 20 independent 10 10 20 20 40 200 Other 0 0 0 100 100 100 100 Total 50 50 100 100 200 500 (a)Is anything suspicious about these observed frequencies? Yes, they are in even numbers of tens. (b) Using the .05 level of significance, test the null hypothesis that these two variables are independent. (c) If appropriate, estimate the effect size