Environmental Protection Agency EPA fuel economy estimates for automobile models tested recently predicted a mean of 24 76 mpg

Question

Environmental Protection Agency EPA fuel economy estimates for automobile models tested recently predicted a mean of 24 76 mpg and a standard deviation of 6 17 mpg for highway driving Assume that a Normal model can be applied Use the 68 95 99 7 Rule to complete parts a through e 68 95 99 7 625 1242 18 50 24 76 30 93 37 10 4327 Q B SOCCORS c About what percent of autos should get more than 30 93 mpg Using the 68 95 99 7 Rule about of autos should get more than 30 93 mpg Type an integer or a decimal Do not round d About what percent of autos should get between 30 93 and 37 10 mpg Using the 68 95 99 7 Rule about of autos should get between 30 93 and 37 10 mpg Type an integer or a decimal Do not round e Describe the gas mileage of the worst 2 5 of cars The worst 2 5 of cars get than mpg b In what interval would you expect the central 99 7 of autos to be found Using the 68 95 99 7 Rule the central 99 7 of autos can be expected to be found in the interval from to mpg Type integers or decimals Do not round Use ascending order A 68 95 99 7 625 934 1551 24 76 34 02 40 19 43 27 Q G A

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