Question: Two fuel additives are tested to determine their effect on

Two fuel additives are tested to determine their effect on miles per gallon for passenger cars. Test results for 12 cars follow; each car was tested with both fuel additives. Use α = .05 and the Wilcox on signed-rank test to see whether there is a significant difference between the median miles per gallon for the additives.

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  • CreatedSeptember 20, 2015
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