mpg. A car company says that the mean gas mileage for its luxury sedah Is believe the mean gas mileage is lower than this and find that a random sample of 5 cars has a mean gas mileage of 19 mpg and a sample standard deviation of 4 mpg. Assume the gas mileage of all of the company's luxury sedans is normally distributed. At x = 0.10, use a t-test to assert the validity of the company's claim. The test statistic is: 1.12 -1.12 2.92 -2.92

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