Fuel Consumption and Cars Even though automobiles are becoming more fuel-efficient, the cost of gasoline is still taking a huge chunk of our personal income. According to the U.S. Energy Information Administration, the mean amount spent on gasoline in 2012 was $2912.29 A random sample of U.S. households was obtained, and each was asked for the amount (in dollars) spent on gasoline during the last year. Is there any evidence to suggest that the data are from a non-normal distribution?