Sampling and Estimation - T value vs. Z values always, values

clearlycanadian

With T-values are you always doing a two-tailed test?

MythosHF

Nope, can be one tailed as well.

What makes you think so?

spartanag07

A confidence interval will always use 2 tailed regardless of T or Z.

This is because with CI, you are interested in the range of results with the mean being the point estimate.

invic

interesting......thanks.