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

question 106

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 and also went bar hopping the weekend before the midterm?

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

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Definitions:

Independent Variable

The variable in an experiment that is manipulated to observe its effect on the dependent variable.

Theoretical Stimulus

An abstract concept or idea used to provoke or explore psychological responses or behaviors in theoretical models.

Social Awkwardness

Feeling discomfort or ineptitude in social situations, often marked by a lack of social skills or confidence.

Excessive Computer Use

The overuse of computers, often leading to negative social, psychological, or physical effects.