Each of the following vignettes presents a research situation encountered in the social sciences. For each situation, indicate the appropriate statistical procedure to test the hypothesis.

9. A social researcher is interested to see whether TV depictions of torture influence support torture. She conducts an experiment where each participant is randomly assigned to watch one of three videos (torture effective, torture ineffective, no torture). She then compares support for torture (measured on a 0 to 100 scale) after watching the video. What statistic should she use for her analyses?