Q Suppose that we will take a random sample of size n from a population having mean µ and standard deviation ?. For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean : (a) µ = 16, ? = 2, n = 43 (Round your answers of "? " and "? 2" to 4 decimal places.) (b) µ = 518, ? = .5, n = 121 (Round your answers of "? " and "? 2" to 4 decimal places.) (c) µ = 2, ? = 1.0, n = 9 (Round your answers of "? " and "? 2" to 4 decimal places.) (d) µ = 96, ? = 4, n = 1,046 (Round your answers of "? " and "? 2" to 4 decimal places.)