39. In the general population, IQ scores follow a normal distribution with a mean of 100 and a standard deviation of 15. a. What is the probability of randomly selecting a person from the general population with an IQ above 112? Show your work for the finding the z score and for the subtracting step (if you need to subtract something to reach your answer). Leave all 4 digits after the decimal point on your answer. b. What percentage of the general population has IQ scores above 112? There is no need to show work for this question. Just write your answer. Your answer should have two decimal places. c. Create a diagram