Does voting behavior vary by social class? To find out, a political scientist questioned a random sample of 80 registered voters about the candidate for office, A or B, they intended to support in an upcoming election. The researcher also questioned members of her sample concerning their social class membership €“ whether upper, middle, working, or lower. Her results are as follows:

Using a chi-square, test the null hypothesis that voting behavior does not differ by social class. What do your results indicate?

Social Class Middle Working Lower Vote for Candidate A Candidate B Upper 14 10 9 13