Health experts say that students should get at least eight hours of sleep each night. If a random sample of 32 students at your school average 6.8 hours of sleep with a standard deviation of 2.6 hours, is there convincing evidence at the 1 percent level that the students at your school are not getting enough sleep?Health experts say that students should get at least eight hours of sleep each night. If a random sample of 32 students at your school average 6.8 hours of sleep with a standard deviation of 2.6 hours, is there convincing evidence at the 1 percent level that the students at your school are not getting enough sleep?