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Question about Two Statistics Problems

Table 9-37 gives the number of miles to a gallon obtained by similar auto mobiles using 5 different brands of gasoline. Test at the (a) 0.05 (b) 0.01 level of significance whether there is any significant difference in brands.
(See attachment for table and other question)

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Solution Summary

The solution computes the level of significance of whether there is a different brand.