Fuel economy estimates for automobiles built one year predicted a mean of 26.5 mpg and a standard deviation of 8.31 mpg for highway driving. assuming the gas mileages for automobiles are normally distributed, use the empirical rule to answer the following: the middle 99.7% of automobiles can be expected to have gas mileages between and . approximately % of automobiles will have a gas mileage more than 34.81 mpg. approximately % of automobiles will have gas mileages between 34.81 and 43.12. which of the statements below describes the gas mileages of the best 2.5% of cars? they get less than 1.57 mpg. they get more than 43.12 mpg. they get less than 9.88 mpg. they get more than 51.43 mpg.