--------------- help for ztail ---------------Normal distribution demonstration ---------------------------------
ztail prob tails
Description -----------
ztail displays a standard normal distribution with vertical lines marking the tails with an area of prob. Use tails = 1 for a one-tailed region; tails = 2 for a two-tailed region.
Examples --------
. ztail .05 1 . ztail .05 2
Author ------
Philip B. Ender UCLA Department of Education UCLA Academic Technology Services enderatucla.edu