In a large population of adults, the mean IQ is 114 with a standard deviation of 21. Suppose 40 adults are randomly selected for a market research campaign. (Round all answers to 4 decimal is approximately normal places, if needed.) (a) The distribution of IQ is approximately normal (b) The distribution of the sample mean IQ is approximately normal with a mean of and a standard deviation of The distribution of actual weights of wedges of cheddar cheese produced at a dairy is normal with a mean of 8.6 ounces and a standard deviation of 0.17 ounces. (Round all answers to 4 decimal places, if needed.) #2 (a) The probability that a randomly chosen wedge of cheddar cheese is greater than 8.57 is #1 is exactly normal 1A may or may not be normal is certainly skewed approximately normal exactly normal (b) If a sample of 19 is randomly chosen, then the distribution of the sample mean weight is approximately normal with a mean of and a standard deviation of not normal 1B left-skewed (c) The probability that the sample mean IQ is less than 113 is right-skewed (d) The probability that the sample mean IQ is greater than 113 is (e) The probability that the sample mean IQ is between 113 and 117 is (c) The probability that the sample mean weight of this sample of 19 is less than 8.57 is (d) The probability that the sample mean weight of this sample of 19 is greater than 8.57 is (e) The probability that the sample mean weight of this sample of 19 is between 8.57 and 8.65 is (f) There is only a 2% chance that the average weight of a sample of these 19 cheese wedges will be below approximately normal not normal left-skewed right-skewed 2B