TABLE 4-2
an Alcohol Awareness Task Force at a Big-Ten

question 69

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.

$\begin{array}{l|cc} & \text {Did Well on Midterm} & \text {Did Poorly on Midterm} \\\hline\text {Studying for Exam }& 80 & 20 \\\text {Went Bar Hopping} & 30 & 70\end{array}$

-Referring to Table 4-2, the events "Did Well on Midterm" and "Studying for Exam" are

• A) not statistically dependent.
• B) collective exhaustive.
• C) not mutually exclusive.
• D) none of the above

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Definitions:

Fasting

Voluntarily abstaining from food and/or drink for a specific period for health, religious, or other reasons.

Mg/dL

Milligrams per deciliter, a unit of measurement often used in medical tests to express the concentration of a substance in a fluid.

LDL Cholesterol

A type of cholesterol known as "bad" cholesterol that can build up in the walls of arteries, leading to a higher risk of heart disease.

Plaque

A sticky deposit on teeth in which bacteria proliferate, or a commemorative plate or sign fixed on a wall or monument.