Hypothesis tests, multiple comparisons, and model assumptions

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Dataset_HW-53.29.18.xlsx
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REP BEFORE AFTER
1 2 4
2 4 5
3 1 3
4 3 3
5 4 3
6 2 5
7 2 6
8 3 4
9 1 5

Gasoline

City 1 City 2
3.43 3.33
3.4 3.42
3.39 3.39
3.32 3.3
3.39 3.46
3.38 3.39
3.34 3.36
3.38 3.44
3.38 3.37
3.28 3.38

Part-3

Use this sheet to answer part-3