[-/1 Points] DETAILS UHSTAT4 9.E.061. MY NOTE The weights of men in a particular age group have mean u = 162 pounds and standard deviation o = 32 pounds. (a) For randomly selected samples of n = 64 men, what is the standard deviation, s.d., of the sampling distribution of possible sample means? s.d. (x) = (b) For randomly selected samples of n = 256 men, what is the standard deviation, s.d., of the sampling distribution of possible sample means? s.d.(x) =