Question: ROUNDED TO WHOLE NUMBER ANSWERS. Last semester in the undergraduate course I was teaching I decided that I would curve the course and, thus, I had to determine where the break in grades would occur. One hundred students were enrolled in the course and the points earned were normally distributed with a mean of 500 and a standard deviation of 50. Therefore, what would the point total be that would separate:

a. A grade of F from D if the bottom 10% of the students was to receive a grade of F.

b. A grade of B from C if the top 30% of the students was to receive a grade of A or B.