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The average gas mileage of a certain model car is 26 miles per gallon. If the gas mileages are normally distributed with a standard deviation

The average gas mileage of a certain model car is 26 miles per gallon. If the gas mileages are normally distributed with a standard deviation of 1.3, find the probability that a randomly selected car of this model has a gas mileage between 25.8 and 26.3 miles per gallon.

A.0.15
B.0.85
C.0.70
D.0.30

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