1. The Proper Mechanics of a Significance Test
Luke Wilcox Kentwood, Michigan

2. Mr. Rossman is worried that one of his readers (Luke Wilcox) has gone “soft” in his second year of AP Exam Reading. Specifically Mr. Rossman believes that Luke is giving higher scores this year, on average, than he did last year. Mr. Rossman collects some data to see if it supports his claim. In a random sample of 50 graded F.R. from last year, he found Luke gave scores with an average of 1.76 and a standard deviation of In a random sample of 60 F.R. from this year, Luke gave scores with an average of 2.01 and a standard deviation of Perform the appropriate significance test.

3. The Rubric (+4) (+1) State hypotheses
(+1) Identify test. Check conditions.
(+1) Mechanics
(+1) Conclusion

4. My toughest student
t = P-value = 0.073

5. Mechanics
t = P-value = 0.073

6. The Proper Mechanics

7. The Proper Conclusion