Answered

A researcher wants to test the hypothesis that students who attended the review session did better on the final exam than students who did not attend the review session.

What sort of hypothesis is this?

A. A two-tailed hypothesis
B. A one-tailed hypothesis
C. A null hypothesis
D. Any of the above is correct



Answer :

GinnyAnswer

Final answer:

A one-tailed hypothesis predicts the direction of the difference, while a two-tailed hypothesis tests for any difference between groups.


Explanation:

A one-tailed hypothesis is when the researcher predicts the direction of the difference between the groups' means, such as one group performing better than the other. In contrast, a two-tailed hypothesis does not predict the direction but simply tests if there is a difference between the groups. The null hypothesis, on the other hand, assumes no difference between the two groups.


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