A set of final examination grade in an introductory statistics course is normally distributed with a mean of 73 with standard deviation of 8
What is the probability of getting a grade below 91 on this exam?
What is the probability that a student scored between 65 and 89?
The probability is 5% that a student scores higher than what grade?
If the professor grades on a curve (i.e, gives A's to the top 10% of the class regardless of the score) are you better of with a grade of 81 on this exam or a grade of 68 on a different exam, where the mean is 62 and standard deviation is 3? why?