IIQ scores are normally distributed with a mean of 105 and a standard deviation of 18.

IIQ scores are normally distributed with a mean of 105 and a standard deviation of 18. Assume that many sampkes of size n are taken from a large population of people and the mean IQ score is computed for each sample. (a). If the sample size is n =64, find the mean and standard deviation of the distribution of sample means.