At a well known business school the GPA of its 1000 undergraduates are approximately normally distributed with mean ?/mu? =2.83 and standard deviation ?ϑ? =38
a. What percentage of the student body are on probation that is, have a GPA below 2.00?
b. What GPA will be exceeded by only 15% of the student body?
c. Find the median and the variance of the GPA