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

clearlycanadian

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

invic

interesting......thanks.

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.

MythosHF

Nope, can be one tailed as well.

What makes you think so?