Discussion
The t value for test one was calculated to be 2.34 (d.f. = 44). Since it was greater than the critical value of t with
the level of significance 0.05 and a degree of freedom of 44 for a two-tailed test (i.e. 2.02), then it can be claimed
that the difference between the two means was significant. Also the t value for test two was calculated to be 2.93
(d.f. = 44). Since it was again greater than the critical value of t with the level of significance 0.05 and a degree of
freedom of 44 for a two-tailed test (i.e. 2.02), then it can be claimed once again that the difference between the two
means in the second test was also significant. Comparing the means of the control in the two tests, we can see that
the mean in test two reduced. The same is true about the experimental group. This could be due to the time factor
since test two was administered 3 months after the first one. Though it must be noticed that the obtained t value for
the first test was 2.34 and for the second it was 2.93, which shows the experimental could still outperform the
control in even a 0.01 level of significance.