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

the calculated amount was 5.9 hours

It's difficult to say if the mean you calculated is similar to the mean of all students at Eva's school without knowing the specific number of students at the school and how they are distributed in terms of sleep duration. The data provided gives a rough estimate of the average sleep duration, but without more information, it's hard to make a definitive comparison.