Question: An owner of a large fleet of automobiles wishes to test his cars to see if they meet the 1977 automobile standards for hydrocarbon emissions. The 1977 standards allow a maximum emission of 3 grams of hydrocarbon per mile. A sample of 49 autos had a mean emission of 3.2 grams per mile and a standard deviation of 0.35 grams per mile. Would you conclude that these autos meet the 1977 standards? Use a 1% risk of Type I error.