Assume that a sample Is used to estimate the Ilfe expectancy for males In a certain county. Find the 90% confidence interval for a sample of size 72 with a mean of 73.5 years and a standard deviation of 15.4 years. Enter your answer as an open-interval (I.e., parentheses) accurate to one decimal place (because the sample statistics are reported accurate to one decimal place). 90% C.I. = Answer should be obtained without any preliminary rounding