In a large section of a statistics class, the points for the final exam are normally distributedFind the lowest score on the final exam that would qualify a student for an A, a B and a C with a mean of 72 and a standard deviation of 9. Grades are to be assignedd according to the following rule:
The top 10% receive As
The next 20% recive Bs
The middle 40% receive Cs
The next 20% receive Ds
The bottom 10% recieve Fs