A senior class has been given a comprehensive examination to assess educational experience. The mean on the test was 74 and the standard deviation was 10.
What percentage of the students had scores
a. between 75 and 85?_________
b. between 80 and 85? _________
c. above 80? _________
d. above 83? _________
e. between 80 and 70? _________
f. between 75 and 70? _________
g. below 75? _________
h. below 77? _________
i. below 80? _________
j. below 85? _________