1. Matched Pairs Test Section 11.2

2. Sodoku Anyone? *I need some people who have never played… *Let’s see if boys are better than girls….

3. Are Boys Better than Girls?

4. Newbies…Do your scores increase if I explain how it’s scored?

5. Matched Pairs T-Test Matching subjects according to a characteristic for blocking purposes. Can be paired in before/after Screens out extraneous factors. Inferences can be based on the differences between the 2 observations in each sample pair.

6. Parameter of Interest

7. Assumptions Dependent (Paired) Random samples Approximately normal Use boxplot to show this (only 1 – of the list of differences)

8. Test Statistic

9. An educator claims that a special vitamin will increase a weight lifter’s strength. Eight weight lifters are selected and given a test and are tested again 2 weeks after the vitamin use. Athelete12345678 Before210230182205262253219216 After219236179204270250222216

10. Confidence Interval

11. A dietitian wishes to see if a person’s cholesterol level will change if the diet is supplemented by a mineral. Can it be concluded that the cholesterol level has changed. Construct a 90% confidence interval. Subject123456 Before210235208190172244 After190170210188173228

12. Homework Worksheet