Step 4. Draw inferences beyond the data

The previous analysis tells us about the distribution of sleep hours last night for your class, but what does it tell us about our research conjecture about the population?

Thought Question (Think about, discuss briefly with your partner, and then move on):

Explain the general process we would like to use to evaluate whether the sample mean hours we observed for your class is convincing evidence that students at your school as a whole average less than 8 hours of sleep on a typical night, pretending we had collected a random sample from all students at your school.

Note: We could also consider focusing on the median rather than the mean. See Section 2.2 for more discussion.

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