1) When hypothesis testing, when might you use a related sample versus an independent sample? Provide examples of both population to illustrate the differences.
2) Mary, a colleague of yours, wants to test the effectiveness of a new lesson plan on two different groups of students. She wants to perform a t-test, but she is not sure whether to use a paired or unpaired test. Base on the information provided, how would you advise your colleague? If she asked you to perform the calculation for her, how would you use SPSS to do so?