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

SCENARIO 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. $\begin{array}{lcc}\text { Student } & \begin{array}{c}\text { Exam Score } \\\text { Before Course (1) }\end{array} & \begin{array}{c}\text { Exam Score } \\\text { After Course (2) }\end{array} \\\hline 1 & 530 & 670 \\2 & 690 & 770 \\3 & 910 & 1,000 \\4 & 700 & 710 \\5 & 450 & 550 \\6 & 820 & 870 \\7 & 820 & 770 \\8 & 630 & 610\end{array}$

-Referring to Scenario 10-5, the value of the sample mean difference is _______ if the difference scores reflect the results of the exam after the course minus the results of the exam before the
Course.

A) 0
B) 50
C) 68
D) 400

Correct Answer:

Verified

Unlock this answer now
Get Access to more Verified Answers free of charge

Access For Free