Question in complete pls

Suppose that we will take a random sample of size n from a population having mean u and standard deviation 0. For each of the following situations, find the mean, variance, and standard deviation of the sampling distribution of the sample mean it : (a) I1 =18. U: 4, n = 37 (Round your answers of "a 2 " and "a 2\" to 4 decimal places.) i (b) H = 576, o: .4, n = 148 (Round your answers of "a 2 " and "a 2 2" to 4 decimal places.) (c) u = 6, a: .1, n = 3 (Round your answers of "a 2 " and "a 2" to 4 decimal places.) i (d) u = 80, a: 7, n = 1,460 (Round your answers of "a i " and "o 2 2" to 4 decimal places.)