A pro-life group wanted to test the effectiveness of an antiabortion commercial. Two random samples, each of 250 respondents, were recruited in...

A pro-life group wanted to test the effectiveness of an antiabortion commercial. Two random samples, each of 250 respondents, were recruited in Atlanta, Georgia. One group was shown the antiabortion commercial. Then, attitudes toward abortion were measured for respondents in both groups. A. What were the independent and dependent variables in this experiment? B. What type of research design was used?