Confidence Intervals and Margin of Error using the TiNSpire CX

To find Confidence Intervals of Proportions using Statistics Made Easy at use option 7

Next, the given proportion po , sample size n and the confidence level alpha as shown below:

Automatically, the correct setup and solution shows in the bottom window.


To also find the sample size given the Margin of Error use option 9:

you will enter the given Margin of Error, proportion and the confidence level Alpha


Confidence Interval for Proportions using the exact Bliss Method on the TiNspire





It involves the F-Distribution instead.
