.Tire manufacturer is interested in testing the fuel economy for two different tread patterns. Tires of...

.Tire manufacturer is interested in testing the fuel economy for two different tread patterns. Tires of each tread type were driven for 1000 miles on each of 9 different cars. The mileages, in miles per gallon, were as follows. Test whether the mean mileage is the same for both types of tread. (ANOVA test)

Car	1	2	3	4	5	6	7	8	9
Tread A	24.7	22.5	24.0	26.9	22.5	23.5	22.7	19.7	27.5
Tread B	20.3	19.0	22.5	23.1	20.9	23.6	21.4	18.2	25.9

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orchestra answered 1 year ago

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