Suppose a teacher has collected all the final exams scores for all statistics classes she has ever taught. This data set is normally distributed with a mean of 81 and a standard deviation of 3.5. a. What is probability a score will be over 81? b. Probability that a score is between 81 and 84.5? C. Probability that a score is between 74 and 88? d. Probability that a score is between 81 and 74? e. Probability that a score is above 88