In a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the results is listed below (1 = not attractive; 10 = extremely attractive). Construct a confidence interval using a 95% confidence level. What do the results tell about the mean attractiveness ratings of the population of all adult females? 8, 9, 2, 8, 6, 5, 6, 8, 8, 9, 5, 9 What is the confidence interval for the population mean ?