Question

According to the National Sleep Foundation, teenagers need about 9 hours of sleep each night to function at their best. Unfortunately, many teens do not get nearly this amount. Two samples of 100 teenagers were asked about the average number of hours they sleep each school night. The results are recorded in the table below.



< 4

4 - 6

6 - 8

8 - 10

10 +


Sample #1
2 9 39 44 6

Sample #2
1 12 34 48 5

Based on the results in the table, in a high school that contains 925 students, approximately how many of the students would you expect to get between 8 and 10 hours of sleep each school night?

Answer 1

sample 1 would get about 8 to 10 hours sleep