250 Juniors at South Central High took the ACT in Spring 2022. The scores were distributed normally with a mean of 27 and a standard deviation of 3.
a) Label the mean and three standard deviations from mean. (4 points)
b) What percentage of scores are between 24 and 30? (3 points)
c) Approximately how many juniors scored between 27 and 30? (3 points)