☑Kizspy.me
(Choose 1 answer)
☐ A
(See picture)
A. 68
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.
B. O
Exam Score
C. 50
Student Before Course (1)
Exam Score
After Course (2)
☐ E
D. 400
1
530
670
E. None of the other choices is correct.
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12345678
690
770
910
1,000
700
710
450
550
820
870
820
770
630
610
if the difference scores
FUO.sh
sh the exam.
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.
