posted by need help .
A school psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. The students believe the mean is not 8 hours. To find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night.
A stemplot and boxplot of the numbers of hours are shown here.
Plots are not shown. Copy and paste might not be working.
Also, what is your question?