The answer is NOT 0.6915 or 0.9738 (Both were incorrect)

Professor Elderman has given the same multiple-choice final exam in his Principles of Microeconomics class for many years. After examining his records from the past 10 years, he finds that the scores have a mean of 76 and a standard deviation of 12. What is the probability that a class of 15 students will have a class average greater than 70 on Professor Elderman's final exam? is awarded Scored Multiple Choice Book Print O Cannot be determined. erences O 0.0262 X 0.6915 n 0.9738