posted by John .
A consumer group is testing a manufacturer’s claim that a new car model will travel at least 30 miles per gallon of gasoline. Assume that 0:=30 and :<30, and that the population standard deviation is known and is equal to 3.2 miles per gallon. An SRS of 40 cars will be used for this test, with a level of significance of =0.01.
Compute the power of this test assuming a proposed alternative value for of 27.5 miles per gallon (i.e. assuming =27.5).