Remember: Step 1 is to calculate the z-score using the formula. Step 2 is to draw the distribution, shade the region, and use the table to determine the relative frequency. (Percentile refers to all of the area to the LEFT of the score) For a distribution in which the mean is 100 and the standard deviation is 12, find the following: a. the relative frequency of scores between 76 and the mean. b. the relative frequency of scores above 112. c. the percentile of a score of 106. d. the percentile of a score of 84