Assume that a hypothesis test of the given claim will be con

Assume that a hypothesis test of the given claim will be conducted. Type I error?

Motor company claims that its new sedan will average better than 30 miles per gallon in the city.

1. The error of failing to reject the hypothesis that mean is 30 miles per gallon when it is actually greater than 30 miles per gallon.

2. the error of rejecting the hypothesis that the mean is 30 miles per gallon when it really is 30 miles per gallon

3. the error of rejeccting the hypothesis that the mean is more than 30 miles per gallon when it really is more than 30 miles per gallon.

4. none of these

which one?

Solution

The error of rejecting the hypothesis that the mean is 30 miles per gallon when it really is 30 miles per gallon-CORRECT ANSWER-100% SURE