For (a) the answer might be either "may or may not be normal" And for (b) it might be either "approximately normal" or "exactly normal" or "not normal" or "left-skewed" or "right-skewed"

In a large population of adults, the mean IQ is 110 with a standard deviation of 17. Suppose 55 adults are randomly selected for a market research campaign. (Round to 2 decimal places for all z-values and round all other answers to 4 decimal places, if needed.) (a) The distribution of IQ |may or may not be normal (b) The distribution of the sample mean IQ is approximately normal = with a mean of 110 and a standard deviation of 2.2923 (c) The probability that the sample mean IQ is less than 108 is (d) The probability that the sample mean IQ is greater than 108 is (e) The probability that the sample mean IQ is between 108 and 114 is