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Environmental Protection Agency (EPA) fuel economy estimates for automobile models tested recently predicted a mean of 34.8 mpg and a standard deviation of 6.7 mpg for highway driving. Assume that a Normal Distribution model can be applied.

1. Draw the model for the auto fuel economy. Clearly label it, showing what the 68-95-99.7 Rule predicts.
2. In what interval would you expect the central 68% of autos to be found?
3. About what percent of autos should get more than 40 mpg?
4. About what percent of cars should get between 32 and 39.2 mpg?

5. Describe the gas mileage of the worst 2.5% of all cars