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

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