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

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Based on annual driving of 15,000 miles and fuel efficiency of20 mpg, a car in the United States uses, on average, 700 gallons ofgasoline per year. If annual automobile fuel usage is normallydistributed, and if 26.76% of cars in the United States use lessthan 480 gallons of gasoline per year, what is the standarddeviation?

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

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