Using only middle school, secondary and college students, fill in the totals before answering the following questions. Of all the students, what percent are in college? Of all the students, what percent sleep 8-10 hours? Of students who sleep less than 3 hours, what percent are in secondary school? Of students in secondary school, what percent sleep less than 3 hours? Of all respondents, what percent are college students who sleep more than 12 hours? Of all respondents, what percent are middle schoolers who get 3 - 8 hours sleep?