Carter Motor Company claims that its new sedan, the Libra, will average better than 30 miles per gallon in the city. Determine the type I error for the test.
A. The error of failing to reject that mean is 30 miles per gallon when it is actually greater than 30 miles per gallon.
B. The error of rejecting that mean is 30 miles per gallon when it is really 30 miles per gallon.
C. The error of rejecting that mean is more than 30 miles per gallon when it is really more than 30 miles per gallon.
D. None of these