Suppose that the data set is: X = 1.7, 1.9, 2.0, 2.1, 2.2, 2.4; Y = 1.9, 2.0, 2.1, 2.4; Z=1.7, 2.0, 2.0, 2.1, 2.2. Do not worry about the units of these data. How would you compare the population means of these three random variables? What is an appropriate decision rule for that comparison? Use about 200 words.