Solution 11929: Calculating P-value on the TI-83 Plus and TI-84 Plus Family of Graphing Calculators.
How do I calculate the p-value on the TI-83 Plus and TI-84 Plus family of graphing calculators?
The p-value can be calculated using the normalcdf command if you have the z-score.
To calculate the p-value of a Left-Tail Test with a z-score of -1.34 calculate a normalcdf using the syntax below:
Please Note: E listed below is the EE key accessed by pressing [2nd] then [,]
normalcdf(-1E99,-1.34,0,1)
A result of .0901227339 will be displayed.
To calculate the p-value of a Right-Tail Test with a z-score of 2.78 calculate a normalcdf using the syntax below:
normalcdf(2.78,1E99,0,1)
A result of .0027180034 will be displayed.
To calculate the p-value of a Two-Tail Test with a z-score of 2.31 calculate a normalcdf using the syntax below then multiply it by 2:
normalcdf(2.31,1E99,0,1)*2
A result of .0208881005 will be displayed.
Please see the TI-83 Plus and TI-84 Plus Family guidebooks for additional information.