Problem 8.37 In a comparison study of a standard versus a premium blend of gasoline, the miles per gallon (mpg) for each blend was recorded for five compact automobiles. Car Standard (mpg) Premium (mpg) 1 26.9 27.7 2 22.5 22.2 3 24.5 25.3 4 26.0 26.8 5 28.5 29.7 Test, at the 5% significance level, the claim that the premium blend delivers more miles per gallon than the standard blend. Your null hypothesis is that “the premium blend is no more fuel efficient than the standard blend.”