A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. Use the results are given the below to test is there a difference between the before and after scores. (round to two decimal places)

1- What is the appropriate test to compere means?

A) Independent two samples t test with unequal variances

B) Paired two samples t test

C) Independent two samples t test with equal variances

D) Z-Score Normal test

2- What is the degrees of freedom?

3- Find the Tstat value (computed t).

4- Find the t critical value.

5- What is your dicession?

A) Reject H0, there is no significant difference

B) Fail to reject H0, there is significant difference

C) Reject H0, there is significant difference

D) Fail to Reject H0, there is no significant difference

A Before After B C D E 74 73 83 77 75 70 88 77 84 74 63 93 84 668 67 95 83 91 84 77 75