Question

13. The political action club has surveyed 240 students on your campus regarding the relationship between their political affiliation and their preference in the 2012 presidential election. The results are given in the following table: Independent Totals Democrat Republican 105 12 25 142 Preferred Obama Preferred Romney Totals 68 15 98 15 120 80 40 240 If a student is selected randomly from those surveyed, find the probability that the student is a Democrat, given that the student preferred Romney. (Write answer as a decimal.)

Answer 1

24o NO 15 Total No. of Students Total of students Preferred Romney = 98 No. of Democrat preferring Romney= P (student is Demo chat given that student Preferred Romney) No of Democrct students preferring Romney Total No. of students puferring Romney Ars 15 0.15306 98