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Question 1

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.

  • statistics -

    Plots are not shown. Copy and paste might not be working.

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