Question

One of your professors wants to know if their teaching methods are effective. They

distribute a pre-test at the beginning of the semester and the same post-test at the end of

the semester. Every student takes both a pre-test and the post-test. Your teacher asks you

to analyze the results. Your professor predicts that pre- and post-test scores will differ

significantly and wants to use an alpha level of 0.05.

a. Write your alternative and null hypotheses.

b. Run your statistical analysis using SPSS. Summarize your results and conclusion (i.e.

include all three parts)

Pre-Test	Post Test
34	40
67	70
23	30
76	75
12	15
8	10
45	50
68	69
78	83
13	17

Answer 1

a) H0: There is no significance difference between pre-test and post-test

H1: There is significance difference between pre-test and post-test

Let the los be alpha = 5%

b) From SPSS output

Test Statistic t = -4.583

P-value = 0.001

Here P-value < alpha 0.05 so we reject H0

Thus we conclude that there is significance difference between pre-test and post-test