IQ scores are commonly thought to be normally distributed, with mean 100 pts. and standard deviation 15 pts. Draw the curve, mark 3 standard deviations in each direction, and write down 3 things that the empirical rule tells us about the distribution of IQ scores. 68% A 95% 99.7% 55 70 85 115 130 145 You take an IQ test and get a score of 130. Assume the same distribution as above. What percentile are you at? Show your work. percentile? What score would you have to earn on an IQ test to be at least at the 84th You take an IQ test and get a score of 124. Assume IQ scores are normally distributed with a mean of 100 points and a standard deviation of 15 points. What percentile are you at? What score would you have to earn on an IQ test to be below 88% of test-takers? Assume IQ scores are normally distributed with a mean of 100 points and a standard deviation of 15 points.