In a survey at a local university 32% of students say they get less than the recommended eight hours of sleep per night. In a group of 3330 students how many would you expect to get 8 or more hours?
Mathematics · High School · Mon Jan 18 2021
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In a survey at a local university 32% of students say they get less than the recommended eight hours of sleep per night. In a group of 3330 students how many would you expect to get 8 or more hours?
32% students sleep less than 8 hour per night, it means remaining students sleep more than 8 hours per night
remaining students (%)= 100-32=68%
if there are 3330 students then students that sleep exact 8 or more than 8 hours are 68%
so, 3330*68%=3330*68/100
=333*6.8
=2264.4 (students value can not be in decimal)
=2264 students (Answer)