Question

In a survey at a local​ university, 45% of students say that they get less than the recommended eight hours of sleep per night. In a group of 2800 ​students, how many would you expect get eight or more hours of sleep per​ night?

Answer 1

37% get less than 8 hours of sleep, 100%-37%=63%
63% get 8 hours or more per night:
(0.63)(2200)=1386

ANSWER: You would expect 1386 to get 8 or more hours of sleep per night.