What effect does decreasing the sample size have on a distribution of sample means? a) It will have more variation b) It will not make any difference c) It will have less variation Question 12 Suppose that a random sample of size 36 is to be selected from a population with mean 50 and standard deviation 8. What is the approximate probability that will be within 0.5 of the population mean? a) 0.5847 b) 0.0498 c) 0.4923 d) 0.7077 e) 0.2923 f) None of the above