Instruction 10-4
to Test the Effectiveness of a Business School

question 3

Multiple Choice

Instruction 10-4
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.
$$\begin{array} { c c c } \text { Student } & \begin{array} { c } \text { Exam Score } \\\text { Before Course }\end{array} & \begin{array} { c } \text { Exam Score } \\\text { After Course (2) }\end{array} \\& ( 1 ) & \\ 1 & 530 & 670 \\ 2 & 650 & 770 \\3 & 910 & 1,000 \\4 & 700 & 710 \\5 & 450 & 550 \\6 & 820 & 870 \\7 & 820 & 770 \\8 & 630 & 610\end{array}$$
-Referring to Instruction 10-4,the value of the standard error of the difference scores is

• A) 60.828.
• B) 14.696.
• C) 22.991.
• D) 65.027.

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Definitions:

Presbycusis

Age-related hearing loss, first to high-frequency sounds, gradually spreading.

Physiological Auditory

Relating to the biological processes and functions involved in hearing and interpreting sounds.

Selective Attention

The ability to focus on relevant stimuli and ignore others.

Forehead

The part of the face above the eyebrows and below the hairline.