A graphing calculator is recommended. A grassroots group opposed to a proposed increase in the gas tax
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Question:
A graphing calculator is recommended. A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since they commute the farthest to work. Suppose that the group randomly surveyed 24 individuals and asked them their daily one-way commuting mileage. The results are below. Using a 5% significance level, test the hypothesis that the three mean commuting mileages are the same. (Let 1 = Working-class, 2 = Professional (middle incomes), and 3 = Professional (wealthy).)
Working-class | Professional (middle incomes) | Professional (wealthy) |
---|---|---|
19.5 | 17.7 | 10.4 |
28.1 | 18.9 | 7.8 |
50.5 | 23.6 | 6.3 |
10.5 | 8.8 | 14.5 |
66.9 | 11.3 | 12.5 |
48.4 | 3.5 | 30.2 |
21.1 | 7.8 | 17.0 |
52.3 | 15.1 | 10.8 |
what is the test statistic and what is the p value ?
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