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A Ford Focus manual transmission gets an average of 28 miles per gallon (mpg) in city...

A Ford Focus manual transmission gets an average of 28 miles per gallon (mpg) in city driving with a standard deviation of 1.6 mpg. Assume that gas mileage is normally distributed.

a) If a Focus is selected at random, what is the probability that it will get more than 31 mpg?

b) What is the probability that a randomly selected Focus will get between 20 and 30 mpg?

c) What is the probability that a randomly selected Focus will get less than 25 mpg?

Math   Statistics-And-Probability   
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