Question

please answer all parts!

Fuel economy estimates for automobiles built one year predicted a mean of 28 mpg and a standard deviation of 6.1 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 .Approximately . Approximately and % of automobiles will have a gas mileage more than 341 mpg. % of automobiles will have gas mileages between 21.9 and 46.3. Which of the statements below describes the gas mileages of the worst 2.5% of cars? They get more than 40.2 mpg They get less than 15.8 mpg. They get less than 9.7 mpg. OThey get more than 46.3 mpg.

Answer 1

PAGE DATE: bRxpe cted to have gas mileages Approximately-L5R1 n-of-automobiles will have a ileage more than 34.1 m pproximately-一84%-of -autonplailes coil! have a gag mileag e mere #gan between 6.3 the gas milec e of the worst 2.5%。 f- COTS 2 →They get less than 15-2 rnng