How many students were there? n = ?
C = mean ± 26%
Suppose that, for a certain mathematics class, the scores are normally distributed with a mean of 75 and a standard deviation of 9. The teacher wishes to give A's to the top 7% of the students and F's to the bottom 7%. The next 17% in either direction will be given B's and D's, with the other students receiving C's.
What is the cumulative distribution?
Grade Percent Cumulative
A 7%
%
B 17%
%
C
%
%
D 17%
%
F 7%
%
1 answer