Question: Problem 8.) A random sample of 22 lawn movers was selected, and the motors were tested to see how many miles per gallon of gasoline

Problem 8.) A random sample of 22 lawn movers was selected, and the motors were tested to see how many miles per gallon of gasoline each one obtained. The mean of the measurements was 4.25. The population standard deviation is 1.20. Find the 95% confidence interval of the true(population) mean. (Assume the data comes from a Normal distribution.)

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