Question

Toyota USA is studying the effect of regular versus high-octane gasoline on the fuel economy of its new high-performance, 3.5-liter, V6 engine. Ten executives are selected and asked to maintain records on the number of miles traveled per gallon of gas. The results are:


At the .05 significance level, is there a difference in the number of miles traveled per gallon between regular and high-octanegasoline?


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  • CreatedDecember 10, 2014
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