SELECT ALL THAT APPLY.
-A research hypothesis (H₁)is said to be a
A)one-tailed test if the research hypothesis is non-directional.
B)right-tailed test if the research hypothesis is directed at the right tail of the sampling distribution.
C)left-tailed test if the research hypothesis is directed at the left tail of the sampling distribution.
D)two-tailed test if the research hypothesis is directional.

Question

Quizplus · Accepted Answer

Option B and C are correct. A one-tailed test is always directional, and a two-tailed test is always non-directional. Hence, option A is incorrect. Option D is also incorrect because it states that when the research hypothesis is directional, then it would be a two-tailed test. However, as stated earlier, a directional test is always one-tailed. Therefore, the correct options are B and C.