3.[] Three populations, numbered 15 2, and 3, are shown: Suppose that you want the sampling distribution of means of samples 'om these populations to he approxi- mately normally distributed and suppose that you can have sample sizes of either a) n = 20, b} n = 50, or e) n = 80 and that you can use each of these sample sizes only onee. Which sample size would you use with population numbers 1: , 2: , and 3: Name and explain the principle that you used to match the sample sizes and populations