A consumer advocacy group claims that the mean mileage for t

A consumer advocacy group claims that the mean mileage for the Carter Motor Company\'s new sedan is less than 32 miles per gallon. Identify the type I error for the test.

Solution

Here, the null hypothesis is the claim of Carter Motor\'s Company, while the altrnative hypothesis is the claim of the consumr advocacy group.

Thus,

Ho: u >= 32
Ha: u < 32

Thus, as a type 1 error is incorrectly rejecting the null hypothesis, then a type I error here is:

Incorrectly saying that the mean mileage for the Carter Motor Company\'s new sedan is less than 32 miles per gallon, when in fact, it is not. [ANSWER]