Your final grade averages are typically approximately normally distributed with a mean of 80 and standard deviation of 8. The professor says that the top 15% of the class will receive an A; the next 29%, a B; the next 41% a C; the next 10%, a D; and the bottom 5%, a F.
a. What grade must you exceed to obtain an A?
b. What grade must you obtain to pass the course with a C or better?