Free Mathematics Tutorials
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Normal Distribution Problems with Answers
Elementary Statistics and Probability Tutorials and Problems
Introduction to Probability
Mean and Standard deviation - Problems with Solutions
Area Under Standard Normal Distribution Calculator
How to use the calculator
There are four situations; select the one corresponding to the area you need to calculate, enter the value(s) of the Z-scores then press "calculate area".
1 -
-1.25
< z <
1
2 -
z >
-1.5
3 -
z <
-1.9
4 -
z <
-2.5
or z >
2.0