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 TABLE 4-2 \text { TABLE 4-2 } An Alcohol Awareness Task Force at a Big-Ten University Sampled

Question 123

Multiple Choice

 TABLE 4-2 \text { 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.
 Did Well on MidtermDid Poorlyon Midterm  Studyingfor Exam 8020 Went Bar Hopping 3070\begin{array}{l}\begin{array} { lcc} &\text { Did Well on Midterm}& \text {Did Poorlyon Midterm }\\\hline \text { Studyingfor Exam } & 80 & 20 \\\text { Went Bar Hopping } & 30 & 70\end{array}\end{array}

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


A) collective exhaustive.
B) statistically dependent.
C) mutually exclusive.
D) none of the above

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