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Assume that fuel economy follows a normal distribution with mean of 24 mpg (miles per gallon)...

Assume that fuel economy follows a normal distribution with mean of 24 mpg (miles per gallon) and a standard deviation of 6 mpg.

(a) In what interval would you expect the central 68% of autos to be found?

(b) What percent of autos should get more than 30 mpg?

(c) What gas mileage corresponds to the worst 2.5% of all cars?

Math   Statistics-And-Probability   
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