Q7. A large class of students took a test. Suppose the scores are normally distributed. Suppose you compute the mean score to be 85 and the standard deviation of the scores to be 5. Use the empirical rule and the symmetry of the normal distribution to find the percentages below. You may find it helpful to sketch a picture. (Round answers to 1 decimal place, if needed.) (3 points) a. About what percentage of the students should score between 80 and 85?

b. About what percentage of the students should score between 75 and 95?

c. About what percentage of the students should score between 70 and 100?