A researcher wanted to determine if using an octane booster would increase gasoline mileage. A random sample of seven cars was selected; the cars were driven for twoweeks without the booster and two weeks with the booster.State the alternative hypothesis.

Gasoline Mileage Without Booster (mpg)	Gasoline Mileage WithBooster (mpg)
21.2	23.8
25.4	25.6
20.9	22.4
27.6	28.3
22.8	24.5
27.3	28.8
23.4	25.2