IB Math A and I student's t test (8.4 notes)

There is a slight error! USE POOLED for all IB t-tests.

[walver]

Hi Tood, thanks for these examples. So, I have a little question about the option "pooled". I've got a Casio Fx 9862GII and, when I have to use option "pooled" it show on the screen "pooled: on / off". In your calculator is "no" or "yes". So, I have to choose "pooled on" or "pooled off" to solve t -s student problems?. Thanks for you replay...