Based on annual driving of 15,000 miles and fuel efficiency of 20 mpg, a car in...

Based on annual driving of 15,000 miles and fuel efficiency of 20 mpg, a car in the United States uses, on average, 700 gallons of gasoline per year. If annual automobile fuel usage is normally distributed, and if 26.76% of cars in the United States use less than 480 gallons of gasoline per year, what is the standard deviation?

Round your answer to 2 decimal places, the tolerance is +/-0.05.

Expert Solution

standard deviation = 354.84

z value is calculated from the following z score table

milcah answered 1 year ago

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