TH 23/23.5 Final Exam- Page 6 of 9 Form C 5. (19 points) The manufacturer of a new compact car claims the miles per gallon (mpg) measurement for the fuel economy is normally distributed with mean = 25.9 mpg and standard deviation = 9.5 mpg. (a) (10 points) What is the probability that one new compact car selected at random has a fuel economy of at least 23 mpg? Answer: The probability is (b) (9 points) If 30 such cars are selected at random and tested, what is the probability their average mpg I is no more than 28 mpg? Answer: The probability is