Suppose that we will take a random sample of size n from a population having mean ,u and standard deviation 0. For each ofthe following situations, find the mean, variance, and standard deviation ofthe sampling distribution ofthe sample mean 3? : {a} ,u = 16, U: 2, n = 48 {Round your answers of \"0' i " and "O i 2" to 4 decimal places.) {b} ,u = 513, U = .6, n: 140 {Round your answers of "a E " and "0' i 2" ta 4 decimal places} [c] _u = 6, 0 =10, n = 9 (Round your answers of "a i " and "0' i 2" to 4 decimal places.)