Calculate the probability using minitab statistical tool:
From past experience, final examination grades in an introductory statistics course follow a Normal distribution. If the professor "curves" by giving A's to the top 10% of the class regardless of the score, are you better off with a grade of 81 on an exam with mean 73 and standard deviation of 8 or a grade of 68 on a different exam where the mean is 62 and the standard deviation is 3?