Construct a 95% Z-interval or a 95% t-interval about the population mean. Assume the data come from a population that is approximately normal with no outliers. The heights of 20- to 29-year-old females are known to have a population standard deviation / = 2.7 inches. A simple random sample of n = 15 females 20 to 29 years old results in the following data: 63.1 67.9 64.8 62.2 65.4 63.3 66.2 68.2 69.7 64.1 68.4 69.9 67.3 64.5 70.2 (64.98. 67.72): we are 95% confident that the mean height of 20- to 29-year-old