T-test and confidence interval for inference of

known:

unknown:

(df=n-1)

CI:

Z-test and confidence interval for inference of p

CI:

sample size:

T-test and confidence interval for inference of (independent samples)

Equal variances:

where

CI:

Degrees of freedom:

Unequal variances:

CI:

Degrees of freedom:

T-test and confidence interval for inference of (matched pairs)

This problem reduces to a 12.2 problem: we simply operate with the difference of the matched pairs, which we might call .

unknown:

( )

CI: