The distribution of grades in an introductory finance class is normally distributed, with an expected grade of 66. If the standard deviation of grades is 12, in what range would you expect 99.00 percent of the grades to fall? (Round answers to 2 decimal places, e.g. 15.25. Hint: Think in terms of what the expected highest and lowest scores would be for 99.00% of the students taking the exam.)