Question: 12. Two fuel additives are tested to determine their effect on miles per gallon for passenger cars. Test results for 12 cars follow; each

12. Two fuel additives are tested to determine their effect on miles

12. 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 a = .05 and the Wilcoxon signed-rank test to see whether there is a significant difference between the median miles per gallon for the additives. Cengage Learning. All Rights Reserved. May not be copied, scanned, or duplicated, in whole or in part. WCN 02-200-203 18.2 Wilcoxon Signed-Rank Test 887 Additive Additive Car 2 Car 1 2 file 1 20.12 18.05 7 16.16 17.20 23.56 21.77 8 18.55 14.98 tive 22.03 22.57 9 21.87 20.03 4 19.15 21.23 17.06 10 24.23 21.15 21.22 11 23.21 22.78 6. 24.77 23.80 12 25.02 23.70

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