1. What are three characteristics of a normal curve? 2. What percentage of cases are lower for each of these z-scores: -1, -2, -1.75, 1, 2, 1.75 -1 = -2 = -1.75 = 1 = 2 = 1.75= 3. For a data set with Mean = 20, SD = 3 find the Z scores for each of the following raw scores: 23, 17, 15, 22, 30. 23: 17: 15: 22: 30: 4. Look at your result from the previous question in regards to raw score 15. Color-in the space that represents the area for persons who fall below the raw score of 15. 5. Using your answers from number 3, what percentage of scores fall between raw scores 17 and 22 (hint: This is a harder one, it helps to use the same steps you used in question 4). Would the distance be the same between scores of 22 and 27?