When using a _____ hypothesis the researcher predicts the direction of the expected difference between the groups.
A)null
B)non-directional
C)one-tailed
D)two-tailed

Question

Quizplus · Accepted Answer

In a one-tailed hypothesis, the researcher predicts the direction of the expected difference between the groups. For example, if the hypothesis is that Group A will perform better than Group B, this would be a one-tailed hypothesis. The other options (A, B, and D) do not involve predicting the direction of the expected difference between the groups.

When Using a _____ Hypothesis the Researcher Predicts the Direction