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1. PT 88 wants to compare the km per liter of gasoline in the use of different cars.: The results are shown in the table

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1. PT 88 wants to compare the km per liter of gasoline in the use of different cars.: The results are shown in the table below With the 0.05 significance level, is there any difference in the mean km per liter of gasoline ? Show your answer step by step ( 6 steps)

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