Applying Statistical Inference: An Example Which of these illustrates a directional hypothesis?
A)Cognitive Behavior Therapy is more effective in treating agoraphobia than psychoanalytic therapy.
B)Greek and independent student GPAs vary.
C)Men and women differ in manual dexterity.
D)Students who study together earn different test scores than students who study alone.

Question

Quizplus · Accepted Answer

A directional hypothesis makes a prediction about the direction of the relationship between variables. In option A, the hypothesis predicts that one treatment (Cognitive Behaviour Therapy) will be more effective in treating agoraphobia than the other treatment (psychoanalytic therapy), indicating a directional relationship. The other options do not make a clear prediction about the direction of the relationship between variables, making them non-directional hypotheses.

Applying Statistical Inference: an Example Which of These Illustrates a Directional