9:28 C E In a large population of adults, the mean IQ is 111 with a standard deviation of 25. Suppose 45 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 is approximately normal (b) The distribution of the sample mean IQ is approximately normal with a mean of approximately normal iation exactly normal n IQ not normal left-skewed In IQ right-skewed (e) The probability that the sample mean IQ is between 110 and 115 is Check I nct cound at a:20.02 eclass.srv.ualberta.ca9:28 C E In a large population of adults, the mean IQ is 111 with a standard deviation of 25. Suppose 45 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 is approximately normal (b) The distribution of the sample mean IQ is approximately normal + with a mean of and a standard deviation of (c) The probability that the sample mean IQ is less than 110 is (d) The probability that the sample mean IQ is greater than 110 is (e) The probability that the sample mean IQ is between 110 and 115 is Check I nct cound at 0:20.02 eclass.srv.ualberta.ca9:28 C E In a large population of adults, the mean IQ is 111 with a standard deviation of 25. Suppose 45 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 is approximately normal is approximately normal IQ is is exactly normal of iation may or may not be normal is certainly skewed an IQ is less than 110 is (d) The probability that the sample mean IQ is greater than 110 is (e) The probability that the sample mean IQ is between 110 and 115 is Check I nct cound at 0:20.02 eclass.srv.ualberta.ca