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 studied 3 hours or more?
A)0.25
B)0.46
C)0.21
D)0.67

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 studied 3 hours or more?
A)0.25 
B)0.46 
C)0.21 
D)0.67

Quizplus · Accepted Answer

From the table, we can see that out of a total of 130 students, 60 students study for 3 or more hours. Therefore, the proportion of students who studied 3 or more hours is 60/130 which is approximately equal to 0.46.

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