Random samples of size n were selected from populations with the means and variances given here. Find the mean and standard deviation of the sampling distribution of the sample mean in each case. (Round your answers to four decimal places.) (a) n:25,l[(:12,62:9 (b) n=1oo,u=7,a2=4 (c) n=6,u=128,02=l A random sample of n observations is selected from a population with standard deviation o = 1. Calculate the standard error of the mean (SE) for these values of n. (Round your answers to three decimal places.) (a) n= 1 SE = (b) n = 2 SE = (c) n = 4 SE = (d) n =9 SE = (e) n = 16 SE = (f) n = 25 SE = (g) n = 100 SE =