http://www.john-weber.com/

HOW TO FIND AND GRAPH THE AREA UNDER THE NORMAL CURVE ON THE TI83 USING THE NAREA PROGRAM

Steps Key Sequence Screens
1. Select the program PGRM
  Select the number in front of NAREA
2. Run the program ENTER
3. Enter the left point Press 1
  Type in value and press ENTER
4. Enter the right point Press 2
  Type in value and press ENTER
5. Enter mu, i.e., the mean Press 3
  Type in value and press ENTER
6. Enter sigma, i.e., the standard deviation Press 4
  Type in value and press ENTER
7. Find and graph the area Press 5
8. To continue ENTER
9. For another area go back to step 3 Press 1  
10. To quit Press 6