Suppose that we will take a random sample of size n from a population having mean / and standard deviation o. For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean x : (a) M= 13, 0= 4, n= 26 (Round your answers of " : " and "o $ 2" to 4 decimal places.) LIX ox 2 OX (b) = 518, 0 = .6, n= 121 (Round your answers of "o : " and "o : 2" to 4 decimal places.) ox 2 OX (c) M= 5, 0= .6, n= 6 (Round your answers of "o : " and "o : 2" to 4 decimal places.) UX OX 2 OX (d) M = 124, o = 3, n= 1,259 (Round your answers of "o : " and "o : 2" to 4 decimal places.) ox 2 OX