Asample of 100 people is classified by gender (male/female) and by whether or not they are registered voters. the sample consists of 80 females and 20 males, and has a total of 60 registered voters. if these data were used for a chi-square test for independence, the expected frequencies should have males who are registered voters.
a) 12
b) 20
c) 40
d) cannot determine without additional information