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

question 171

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 who went bar hopping did well on the midterm?

• A) 30/100 or 30%
• B) 30/110 or 27.27%
• C) 30/200 or 15%
• D) (100/200)*(110/200) or 27.50%