To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. Suppose the before and after exam scores are both normally distributed. Which of the following tests will be the most appropriate?
A) pooled-variance t test
B) paired t test
C) Wilcoxon rank sum test
D) McNemar test

Question

Quizplus · Accepted Answer

The most appropriate test for comparing the before and after exam scores of the same individuals is the paired t test. The other options are not suitable for this scenario. The pooled-variance t test is used for comparing the means of two independent samples with equal variances. The Wilcoxon rank sum test is used for comparing the medians of two independent samples or for non-parametric data. The McNemar test is used for comparing paired nominal data before and after an intervention. Since the question involves continuous data, the McNemar test is not appropriate for this scenario.

To Test the Effectiveness of a Business School Preparation Course