SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken 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 table contains the result.

-Referring to Scenario 2-6,if the sample is a good representation of the population,we can expect _____percent of those who did poorly on the midterm to have spent the weekend studying.
A)10
B)22.22
C)45
D)50

Question

SCENARIO 2-6
A sample of 200 students at a Big-Ten university was taken 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 table contains the result.
 
-Referring to Scenario 2-6,if the sample is a good representation of the population,we can expect _____percent of those who did poorly on the midterm to have spent the weekend studying.
A)10 
B)22.22 
C)45 
D)50

Quizplus · Accepted Answer

Out of the 100 students who did poorly on the midterm, 22 of them spent the weekend studying (as shown in the table). Therefore, the percentage of students who did poorly on the midterm and spent the weekend studying is 22/100 = 22%. Note that we can only make this assumption if the sample truly represents the population.

SCENARIO 2-6 A Sample of 200 Students at a Big-Ten University Was