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

question 12

Multiple Choice

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.
$$\begin{array} { c c c } \text { Student } & \begin{array} { c } \text { Exam Score } \\\text { Before Course (1) }\end{array} & \begin{array} { c } \text { Exam Score } \\\text { After Course (2) }\end{array} \\\hline { 3 - 3 } 2 & 530 & 670 \\2 & 690 & 770 \\3 & 910 & 1,000 \\4 & 700 & 710 \\5 & 450 & 550 \\6 & 820 & 870 \\7 & 820 & 770 \\8 & 630 & 610\end{array}$$
-Referring to Instruction 10-5,what is the critical value for testing at the 5% level of significance whether the business school preparation course is effective in improving exam scores?

• A)1.895
• B)2.145
• C)2.365
• D)1.761

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Definitions:

Sulcus

A term specifically referring to the indentations or narrow grooves on the surface of an organ or tissue, including the brain.

Gyrus

A ridge or fold between two clefts on the cerebral surface in the brain, associated with increased surface area for neural processing.

Cranial Nerves

A set of twelve nerves that originate in the brain and provide motor and sensory functions primarily to the structures of the head and neck.

Spinal Cord

The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem down the vertebral column to the lumbar region.