A researcher carries out a t-test to analyse the differences between two conditions.She wishes to use a one-tailed hypothesis.The output from SPSS gives a two-tailed probability of .10.Which value should she use to report the one-tailed associated probability?
A).010
B).50
C).05
D).10

Question

Quizplus · Accepted Answer

For a one-tailed test, the p-value is half of the two-tailed p-value given the direction of the effect aligns with the hypothesis. Therefore, .10 divided by 2 equals .05.

A Researcher Carries Out a T-Test to Analyse the Differences