3. Consider the following list of test scores: 27, 38, 23, 18, 27, 10, 15, 24, 25, 26, 30, 24, 20, 23, 25, 18, 22, 34, 31, 30, 23, 24, 28, 23, 16, 30, 40, 18, 24, 25 a. Do the data come from a population that is normally distributed? Why or why not? b. If yes in part a, what would be the test score corresponding most closely to a z-score of -1.5? Show your work