Question

please answer all parts.

Fuel economy estimates for automobiles built one year predicted a mean of 27.7 mpg and a standard deviation of 8.43 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 % of automobiles will have a gas mileage more than 5299 mpg. Approximately % of automobiles will have gas mileages between 19.27 and 36.13. Which of the statements below describes the gas mileages of the worst 2.5% of cars? and . . . . They get more than 52.99 mpsg. They get more than 44.56 mpg. They get less than 2.41 mpg. They get less than 10.84 mpg. pg.

Answer 1

1) the middle 99.7% of automobiles expected to be

(1.91 , 52.49)

2) approximately 0.13% of automobiles will have gas mileage more than 52.99

3) aprroapproxim 68% of automobiles are between 19.27 and 36.14

4) they get less than 10.84 mpg