TABLE 10-5
to Test the Effectiveness of a Business School

TABLE 10-5
To test the effectiveness of a business school preparation course, 8 students took a general business test before and after the course. The results are given below.
$$\begin{array}{l}\quad \quad \quad \quad \quad \quad \quad \quad \text { Exam Score } \quad \text { Exam Score }\\\begin{array} { c c c } \text { Student } & \text { Before Course (1) } & \text { After Course (2) } \\\hline 1 & 530 & 670 \\2 & 690 & 770 \\3 & 910 & 1,000 \\4 & 700 & 710 \\5 & 450 & 550 \\6 & 820 & 870 \\7 & 820 & 770 \\8 & 630 & 610 \\\hline\end{array}\end{array}$$
-Referring to Table 10-5, at the 0.05 level of significance, the conclusion for this hypothesis test would be

A) the business school preparation course does not improve exam score.
B) the business school preparation course has no impact on exam score.
C) the business school preparation course does improve exam score.
D) It cannot be drawn from the information given.