Question: Consider again the two-way ANOVA hypothesis test described in Problem 29 a. Is the average miles per gallon for all vehicles using Octane A different

Consider again the two-way ANOVA hypothesis test described in Problem 29

a. Is the average miles per gallon for all vehicles using Octane A different from the average miles per gallon for all vehicles that use other types of octane? Support your conclusion with one or more appropriate confidence intervals.

b. Is the average miles per gallon for all medium-type vehicles different from the average miles per gallon for all other types of vehicles? Support your conclusion with one or more appropriate confidence intervals.

Problem 29

The file P12_29.XLS gives the miles per gallon for each of three different octanes (Octane A, Octane B, and Octane C) of gasoline and three types of vehicles (light, medium, and heavy). Subsets of ten vehicles of each type have been randomly assigned to each octane level

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