Problem
1. What is the hypothesis of the study?
2. How is the hypothesis relevant to development economics?
3. What is the null hypothesis in table 4 with regards to a specific variable? Explain.
4. In table 4 (column 1), is the key variable statistically distinguishable from zero? Explain.
5. In table 8, the authors report the estimated coefficient of "Pretest×textbook school". Explain the hypothesis that they are testing with this variable.
6. Is the estimated coefficient of "Pretest×textbook school" statistically significantly different from zero? Justify your answer.
7. What are the threats to the internal validity of this study? Explain.
8. What are the policy implications of this study? Explain.
The response should include a reference list. Double-space, using Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.
Text Book: Many Children Left Behind? Textbooks and Test Scores in Kenya By Paul Glewwe, Michael Kremer, and Sylvie Moulin.