In his study of effectiveness of driver's education programs, Cameron administers a practice items from a drivers' test. Participants are randomly assigned to one of two treatments, either a tutorial that narrates content, or an equivalent amount of time to practice items with feedback. After the treatment, Cameron again assesses students' knowledge with a drivers' test. He set his alpha atp= .05, and reported that significant differences indicated that those in the practice with feedback condition outperformed those in the tutorial condition. Which of the following were appropriate for Cameron to use to analyze his data?

ttest

ANCOVA

Chi Square

Pearson r