1 2 = 3 4 5 6 = 7 8 9 10 11 12 12 Es 13 14 Suppose that a random sample of 20 adult U.S. males has a mean height of 71 inches with a standard deviation of 2 inches. If we assume that the heights of adult males in the U.S. are normally distributed, find a 99% confidence interval for the mean height of all U.S. males. Give the lower limit and upper limit of the 99% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: Upper limit: