1. Review 2-sample t, ANOVA, Chi-square

2. Working Problems From the story, what is the design From the design, what formula and computations? From the computations, what statistical conclusion? From the conclusion what is the interpretation in the original problem?

3. Political Ideology Angresti & Finlay, Statisical methods for the social sciences, 4 th ed., p 371. A (stratified) random sample of 15 democrats, 15 republicans, and 15 independent voters was interviewed to determine their political stance on a number of issues. Interviewers gave each voter a number indicating political ideology from 1 = extremely liberal to 7 = extremely conservative. We want to know whether there are differences among the groups. Data in ‘politics.’ What design? What formula? What is alpha? What is the null? The alternative? What are the obtained and critical values? What is the result (is it sig)? Post hoc? What does it mean?

4. Blood Doping Witte & Witte, Statistics, 8 th ed, p. 282. Athletes have used EPO, a synthetic hormone to increase red blood cells. A physician wants to know whether it will increase the stamina of depressed patients. Participants (volunteers) are randomly assigned to an EOP group or a placebo group. After treatment, they are measured on total time in minutes that they can spend on a rapidly moving treadmill. Data in file BloodDope. What design? What formula? What is alpha? What is the null? The alternative? What are the obtained and critical values? What is the result (is it sig)? What does it mean?

5. Blood Bank Witte & Witte, Statistics, 8 th ed., p 418. A report from the surgeon general suggests that in the general population the proportion of various blood types is O=.44, A=.41, B=.10, AB=.5. A local bloodbank wants to know whether these proportions are accurate for the volunteers in the area. They dig up records for the last 100 volunteers at the bloodmobile to test. Data in Blood Bank What design? What formula? What is alpha? What is the null? The alternative? What are the obtained and critical values? What is the result (is it sig)? What does it mean?

6. Diet, Exercise, & Weight Female health club members interested in losing weight are randomly assigned to a high protein diet or instructed to maintain their ordinary diet. They are also assigned to one of three exercise groups: aerobic, resistance training, or alternating (both aerobic and resistance on alternate days). At the end of 2 months, all are weighed. Data in DietExercise. What design? What formula? What is alpha? What is the null? The alternative? What are the obtained and critical values? What is the result (is it sig)? What does it mean?