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The gas tank on a car was filled 27 times and the average miles per gallon for the tank was calculated.The sample resulted in a

The gas tank on a car was filled 27 times and the average miles per gallon for the tank was calculated.The sample resulted in a mean of 24.1 with a standard deviation of 4.2 mpg.Test the claim that the average mpg for this car is more than 22 with 5% significance.

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