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Assume that gas mileage for cars is normally distributed with a mean

July 18, 2020/in Feeds /by admin

Assume that gas mileage for cars is normally distributed with a mean
of 23.5 miles per gallon and a standard deviation of 10 miles per gallon.
(a) What is the probability that a randomly selected car gets between 20 and 25 miles per gallon? (Round the answer to 4 decimal places)
(b) Find the 80th percentile of the miles per gallon distribution. (Round the answer to 2 decimal places)