The correct argument for using a two-tailed test,even if there is a clear basis for predicting a result in a given direction,is that
A)if the null hypothesis is in fact true,rejecting it will provide stronger evidence in support of it.
B)one-tailed tests cannot be used in most studies involving one or two groups.
C)if an unexpected result that is opposite of what is predicted occurs,it does not have to be ignored.
D)a two-tailed test improves the chance of getting a statistically significant result.

Question

Quizplus · Accepted Answer

A two-tailed test allows for the possibility of an effect in either direction, not just the one anticipated. This means if results are significantly different in the unexpected direction, they can still be considered and analyzed, rather than being disregarded as they might be in a one-tailed test where only one direction of difference is considered.

The Correct Argument for Using a Two-Tailed Test,even If There