http://www.john-weber.com/
HOW TO FIND MINIMUM SAMPLE SIZE WITH TI83 CALCULATOR
Here is the
ZAREA.83P program
.
Steps
Key Sequence
Screens
1. Run ZSAMPLE program
Input margin of error (as a positive value) then ENTER
Input confidence interval (as a decimal) then ENTER
Input standard deviation then ENTER
Round value up to the next integer