A sociologist studying freshmen carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The table below provides the answers on the time slept and the time spent studying. What proportion of students slept less than 6 hours per night?
A)0.286
B)0.292
C)0.25
D)0.333

Question

A sociologist studying freshmen carried out a survey, asking (among other questions) how often students went out per week, how many hours they studied per day, and how many hours they slept at night. The table below provides the answers on the time slept and the time spent studying.  What proportion of students slept less than 6 hours per night?
A)0.286 
B)0.292 
C)0.25 
D)0.333

Quizplus · Accepted Answer

According to the table, there are 24 students who slept less than 6 hours per night (12% of total students). Therefore, the proportion of students who slept less than 6 hours per night is 24/82 ≈ 0.292. Thus, the best choice is B.

A Sociologist Studying Freshmen Carried Out a Survey, Asking (Among