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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

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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