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 given table provides the answers on the time slept and the time spent studying. Hours/day studied Less than 6 hours slept 6 to 8 hours slept More than 8 hours slept

Among the students who studied more than 4 hours, what proportion slept less than 6 hours a night?

a.) 0.2

b.) 0.4

c.)0.08

d.) 0.29

Transcribed Image Text:

Hours/day studied Less than 2 2 to 3 3 to 4 more than 4 Total Less than 6 hours slept 20 10 20 20 70 6 to 8 hours slept 40 30 20 20 110 More than 8 hours slept 20 10 20 10 60 Total 80 50 60 50 240 Hours/day studied Less than 2 2 to 3 3 to 4 more than 4 Total Less than 6 hours slept 20 10 20 20 70 6 to 8 hours slept 40 30 20 20 110 More than 8 hours slept 20 10 20 10 60 Total 80 50 60 50 240

Answer rating: 100% (QA)

Hoursday studied Less than 6 to 8 hours More than 8 Total 6 hours slept slept hour... View the full answer