# Advanced Statistics; fail to reject the null

**Question description**

The freshman 15 refers to the urban legend that students gain an average of 15 pounds during their freshman year of college. The weights of 100 freshmen at a certain University were observed in August and then re-examined in May. The claim that the mean difference is equal to 15 pounds is tested at a 0.05 significance level. The result is "fail to reject the null hypothesis".

- What do the results suggest?
- What factors could have affected the results?
- How can these results be used to make changes on campus?

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Brown University

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