Question: 65. A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since

65. A grassroots group opposed to a proposed increase in the gas tax claimed that the increase would hurt working-class people the most, since hey commute the farthest to work Suppose that the group randomly sunved 24 individuals and asked them their daily one-way commuting mileage. Tne results are in Table 13.22. Using a 5% significance level, test the hypothesis that the three mean commuting mileages axe the same. working-class professional (middle incomes) professional (wealthy) 178 267 494 9.4 65,4 19S Table 13.22 16S 174 7.4 2.1 62 4.6 126 92

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