A research group surveyed individuals from 3 different income classes and asked them their daily one-way commuting mileage. The results are below: Commute Mileage by Income class working-class professional (middle income) professional (wealthy) 17.8 16.5 8.5 26.7 17.4 6.3 49.4 22 4.6 9.4 7.4 12.6 65.4 9.4 11 47.1 2.1 28.6 19.5 6.4 15.4 51.2 13.9 9.3 Test the claim that the mean for the 3 groups are the same, using α=0.01.
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