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. Is there an association between the number of hours studied and the number of hours slept?
A)Yes, because the proportions sleeping less than 6 hours increases as the number of hours studied increases.
B)No, because there is no reason to sleep less if a student studies more.
C)No, because a sleep-deprived student cannot study many hours.
D)Yes, because the more a student studies, the less time there is for sleeping.

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.  Is there an association between the number of hours studied and the number of hours slept?
A)Yes, because the proportions sleeping less than 6 hours increases as the number of hours studied increases. 
B)No, because there is no reason to sleep less if a student studies more. 
C)No, because a sleep-deprived student cannot study many hours. 
D)Yes, because the more a student studies, the less time there is for sleeping.

Quizplus · Accepted Answer

The proportions of students sleeping less than 6 hours increase as the number of hours studied increases, which suggests a negative correlation between the number of hours studied and the number of hours slept. This association may be due to students sacrificing sleep in order to study more, leading to sleep deprivation. Therefore, choice A is the best answer.

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