TABLE 10-5 To Test the Effectiveness of a Business School Preparation Course

question 58

Multiple Choice

TABLE 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.
Exam Score Exam Score
Student Before Course (1) After Course (2)
1 530 670
2 690 770
3 910 1,000
4 700 710
5 450 550
6 820 870
7 820 770
8 630 610
-Referring to Table 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) 0
• B) 50
• C) 68
• D) 400

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Definitions:

Ovulation

The release of an egg from one of the ovaries, a critical phase in the menstrual cycle involved in reproduction.

Menstruation

The monthly shedding of the lining of the uterus (endometrium) that results in bleeding from the vagina, part of the female reproductive cycle.

Estrogen

A group of steroid hormones that promote the development and maintenance of female characteristics of the body.

Progesterone

A steroid hormone released by the ovaries, placenta, and adrenal glands that plays a key role in the menstrual cycle, pregnancy, and embryogenesis.