Professor Elderman Has Given the Same Multiple-Choice Final Exam in His

Multiple Choice

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?

A) 0.0262
B) 0.6915
C) 0.9738
D) Cannot be determined.