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A government agency wants to test an oil company's advertising claim according to which cars will run the same miles on a tankful of its regular gas as on a tankful of a competitor's (more expensive and allegedly superior) gasohol. Twenty identical cars are randomly selected. Half are filled with gasoline and half with gasohol. The resulting mileages appear in the following Table. Make a Wilcoxon Rank-sum test at the 5 percent level of significance. TABLE: Miles Driven before Fuel Exhaustion On Gasoline (A) On Gasohol (B) 350 352 372 375 348 351 371 375 381 391 392 390 353 360 388 393 388 394 373 379

A government agency wants to test an oil company's advertising claim according to which cars will run the same miles on a tankful of its regular gas as on a tankful of a competitor's (more expensive and allegedly superior) gasohol. Twenty identical cars are randomly selected. Half are filled with gasoline and half with gasohol. The resulting mileages appear in the following Table. Make a Wilcoxon Rank-sum test at the 5 percent level of significance. TABLE: Miles Driven before Fuel Exhaustion On Gasoline (A) On Gasohol (B) 350 352 372 375 348 351 371 375 381 391 392 390 353 360 388 393 388 394 373 379

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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A government agency wants to test an oil company's advertising claim according to which cars will run the same miles on a tankful of its regular gas as on a tankful of a competitor's (more expensive and allegedly superior) gasohol. Twenty identical cars are randomly selected. Half are filled with gasoline and half with gasohol. The resulting mileages appear in the following Table. Make a Wilcoxon Rank-sum test at the 5 percent level of significance. TABLE: Miles Driven before Fuel Exhaustion On Gasoline (A) On Gasohol (B) 350 352 372 375 348 351 371 375 381 391 392 390 353 360 388 393 388 394 373 379
Transcribed Image Text:A government agency wants to test an oil company's advertising claim according to which cars will run the same miles on a tankful of its regular gas as on a tankful of a competitor's (more expensive and allegedly superior) gasohol. Twenty identical cars are randomly selected. Half are filled with gasoline and half with gasohol. The resulting mileages appear in the following Table. Make a Wilcoxon Rank-sum test at the 5 percent level of significance. TABLE: Miles Driven before Fuel Exhaustion On Gasoline (A) On Gasohol (B) 350 352 372 375 348 351 371 375 381 391 392 390 353 360 388 393 388 394 373 379
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