Dr. Lee is studying the impact of a new teaching method on student performance. She randomly assigns one group of students to the new teaching method and another group to the traditional method. After a semester, she compares the final exam scores of the two groups to determine if there is a significant difference. The appropriate statistical test for this comparison is a(n) _____. a. correlational analysis b. paired samples t-test c. ANOVA d. independent measures t-test e. chi-square test