SCENARIO 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 Scenario 4-2,what is the probability that a randomly selected student did well on the midterm and 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%

Question

SCENARIO 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 Scenario 4-2,what is the probability that a randomly selected student did well on the midterm and 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%

Quizplus · Accepted Answer

The probability of a student doing well on the midterm and going bar hopping the weekend before is specifically about the intersection of these two events, which is given as 30 out of 200, or 15%.

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