Suppose that a random sample of 20 adult U.S. males has a mean height of 69 inches with a standard deviation of 1.5

inches. If we assume that the heights of adult males in the U.S. are normally distributed, find a 95% confidence interval for the mean height of all U.S. males. Then find the lower limit and upper limit of the 95% confidence interval. Carry the intermediate computations to at least three decimal places. Round answers to one decimal place.