n a large population of college-educated adults, the mean IQ is 112 with standard deviation 25. Suppose 300 adults from this population are randomly selected for a market research campaign. The distribution of the cample mean IQ is: O A. approximately Normal, mean equal to the observed value of the sample mean, standard deviation 25. O B. approximately Normal, mean 112, standard deviation 0.083. O C. approximately Normal, mean 112, standard deviation 25. OD. approximately Normal, mean 112, standard deviation 1.443.