https://www.webassign.net/aswsbe13/appendix-b.pdf

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You may need to use the appropriate appendix table or technology to answer this question. Two fuel additives are tested to determine their effect on miles per gallon for passenger cars. Suppose test results for 12 cars follow; each car was tested with both fuel additives. Use =0.05 and the Wilcoxon signed-rank test to see whether there is a significant difference between the median miles per gallon for the additives. State the null and alternative hypotheses. H0 : Median for additive 1 - Median for additive 20 Ha : Median for additive 1 - Median for additive 2>0 H0 : Median for additive 1 - Median for additive 2=0 Ha : Median for additive 1 - Median for additive 2=0 H0 : Median for additive 1 - Median for additive 2=0 Ha : Median for additive 1 - Median for additive 2=0 H0: Median for additive 1 - Median for additive 2>0 Ha : Median for additive 1 - Median for additive 2=0 H0 : Median for additive 1 - Median for additive 20 Ha : Median for additive 1 - Median for additive 2