The following are the kilometres per gallon which a test driver got for ten tankfuls each of three kinds of gasoline:
Gasoline A 30, 41, 34, 43, 33, 34, 38, 26, 29, 36
Gasoline B 39, 28, 39, 29, 30, 31, 44, 43, 40, 33
Gasoline C 29, 41, 26, 36, 41, 43, 38, 38, 35, 40.
Use the Kruskal-Wallis test at the level of significance α = 0.05 to test the null hypothesis that there is no difference in the average kilometre yield of the three types of gasoline
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