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, one must assume that the population of difference scores is normally distributed.

Question

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, one must assume that the population of difference scores is normally distributed.

Quizplus · Accepted Answer

The assumption of normality is required for conducting a paired t-test, which is typically used to analyze before-and-after scores.

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

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