Education Technology

Solution 36295: Calculating A Normal Cumulative Distribution (normalcdf) on the TI-83 Plus Family of Graphing Calculators.

How do I calculate a Normal Cumulative Distribution (normal cdf) on the TI-83 Plus family of graphing calculators? 

Use the following example as a guide when calculating for the normal CDF on the TI-83 Plus family of graphing calculators.

Lower Bound: 5
Upper Bound: 15
Mean: 10
Standard Distribution: 2.5

1) Press [2nd] [VARS] [Down] [Enter] 
2) Next to normalcdf( enter [5] [,] [15] [,] [10] [,] [2.5] [)]
3) Press [Enter] and it will display the answer

Please see the TI-83 Plus Family guidebooks for additional information.