Find the AREA BETWEEN the following scores on the normal curve given the MU and Sigma.
MU 100; Sigma 15; Low Score 110; High Score 123 = Area?
First, find z = (x-Mu)/Sigma where x is the score
For x = 123 = High Score
z = (123-100)/15 = 1.5333
Now look ...
The solution finds the area between the normal curve.