Eva is curious how much students at her school sleep
do you think the mean you calculated is similar to the mean of all the students at Evas school
1 student slept 6
3 students slept 7
2 slept 8
1 slept between 6 and 7 '
1 slept between 9 and 10
To calculate the mean number of hours of sleep for the students at Eva's school, we would add up all the hours of sleep and then divide by the total number of students.
(1 x 6) + (3 x 7) + (2 x 8) + (1 x 6.5) + (1 x 9.5) = 6 + 21 + 16 + 6.5 + 9.5 = 59
There are 8 students in total, so the mean number of hours of sleep is 59 / 8 = 7.375 hours.
Since we only have a small sample size of students provided by Eva, it is difficult to say whether the mean calculated from this sample is similar to the mean of all the students at Eva's school. However, if Eva believes this sample is representative of the entire student population at her school, then the mean calculated could be a good estimate of the overall average sleep hours for students at her school.