Instruction 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.
-Referring to Instruction 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) 400
B) 50
C) 68
D) 0
Correct Answer:
Verified
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