TABLE 4-2 An Alcohol Awareness Task Force at a Big-Ten University Sampled

question 109

Multiple Choice

TABLE 4-2
An alcohol awareness task force at a Big-Ten university sampled 200 students after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. The following result was obtained.

-Referring to Table 4-2, what is the probability that a randomly selected student did well on the midterm or went bar hopping the weekend before the midterm?

• A) 30/200 or 15%
• B) (80 + 30)/200 or (30 + 80)/200 or 55%
• C) (30 + 70)/200 or (70 + 30)/200 or 50%
• D) (80 + 30 + 70)/200 or (110 + 100 - 30)/200 or 90%

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Definitions:

Group Identity

The sense of belonging and identification that individuals feel with a particular group, shaped by the group’s norms, values, and characteristics.

False News

Information that is fabricated or misrepresented with the intent to deceive or mislead.

Repetition

The act or process of repeating something, often used as a method of learning or emphasizing.

Confounding Variables

Variables that the researcher failed to control or eliminate, potentially leading to a false association between the studied variables.