In determining automobile mileage ratings, it was found that the mpg in the city for a certain model is normally distributed, with a mean of 37 mpg and a standard deviation of 1.9 mpg Suppose that the car manufacturer samples six cals from Its assembly line and tests them for mileage ratings a. What is the distnbution of the mean mpg for the sample? b. What is the probability that the mean mpg of the sample will be greater than 39 mpg? c. What is the probability that the mean mpg of the sample will be less than 35.5 mpg?

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