Testing the hypothesis that a patient's dream [ Choose recall ability will increase after a recall enhancement seminar. Each patient's recall Choose ] ability is measured before the seminar, and again after the seminar, and the difference An r-test between these measurements is compared. A Chi-Square test for independence Testing whether Literary Genre Preference is related to Music genre Preference. A group A Two-Way Anova of students is surveyed for both music and literary preferences. The researcher then A One-Way Anova tests the relationship between the two measures. A related samples t-test Testing the hypothesis that there is a [ Choose ] difference between new Instructional Techniques and a control group, for two different levels of Student Aptitude. Separate groups of low and high aptitude participants are taught by either one of two new methods or by the standard method. Testing whether SAT Math scores are related to IQ scores. A group of students takes both [ Choose ] the Math SAT component and a standardized Q test. The researcher then tests the relationship between the two measures. Testing the hypothesis that taking Zinc [ Choose ] supplements reduces the time a person suffers from a cold or flu. Participants are assigned to either a Control group, a Placebo group, or a Zinc supplement group. Each participant records the number of days they suffered from a cold or flu during winter season, and the groups are compared