prgmBTWNSCOR

Line	Commands or Statements	Comments
1.	ClrHome	Clear Screen
2.	Input "x1 =",A
3.	Input "x2 =",B
4.	Input "x =",M
5.	Input "SD =",S
6.	normalcdf(A,B,M,S)->Z
7.	Disp"Z ="
8.	Disp Z
9.	Pause
10.	ClrHome	Clear Screen

Reference:

The normalcdf( Command

http://tibasicdev.wikidot.com/normalcdf

Using the TI-83 instead of the normal table to calculate probabilities corresponding to z-scores

http://wind.cc.whecn.edu/~pwildman/statnew/new_page_17.htm