Asked by joe-c

For a class of 43 students fora certain exam, the mean grade is 67 and the standard deviation is 7.
a) How many students should receive a C? (a c is between 74-79)
b) How many students should receive a B? (a B is between a 80-89)
c) what score is necessary to get an A?

Answers

Answered by Reiny
use this applet

http://davidmlane.com/hyperstat/z_table.html

enter your mean and SD
then click on the "between" and enter 74 and 79

multiply the probability factor by 43
There are no AI answers yet. The ability to request AI answers is coming soon!

Related Questions