Kizspy | Question: 12
(Choose 1 answer)
(See picture)
A. O
B. 50
C. 68
D. 400
E. None of the other choices is correct.
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.
Exam Score
Exam Score
Student Before Course (1)
After Course (2)
1
530
670
plovenian.com
2
690
1345
770
910
1,000
4
700
710
5
450
550
6
820
870
7
820
770
8
630
610
if the difference scores
The value of the sample mean difference is
reflect the results of the exam after the course minus the results of the exam
before the course.
