Mary, a colleague of yours, wants to test the effectiveness of a new lesson plan on two different groups of students

Math Mar 30, 2022

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?