Question Completion Status: Support ? QUESTION 13 13) Assuming the IQ scores of a distribution of 8000 college students is bell shaped with a mean of 120 and a standard deviation of 8, Using the Emprical rule find the percent of data values who are expected to have IQ scores between 120 and 128 O a. 34% O b.68% O c.95% O d.99.7% QUESTION 14 14) Suppose the following 12 scores represents a population of IQ scores : 123, 124, 106, 131, 117, 122, 114, 132, 121, 128, 129, 130 Find the population mean (nearest tenth) O a. 114 O b. 128 O c. 123.1 O d. none of the choices QUESTION 15 15) Referring to question 14) above, a random sample set of data is selected from the population 106, 122, 132 Find the sampling error for this sample set (nearest tenth) O a. 120 O b. none of the choices O c.-3.1 O d.2.5