Regarding your question about linking Tables and CDF's:
On the TI-83 if you define Y1=normalcdf(0,X) or normalcdf(0,X,0,1) and then set TblStart=0 and (delta)Tbl=.1 (or whatever stepsize you choose) you can then go to Table and find a table that you are looking for.
Or you can store the sequence (0,.1,.2,.....etc) into L1 and then define L2 to be Y1(L1). You now have a form of the table in the lists.
This will also work with the other cdf's on the 83
Doug Kuhlmann Math Department Chair Phillips Academy Andover, MA 01810 508-749-4242