Question
A __ test is conducted when we have no theoretical reason for specifying a direction in the research hypothesis. mean left-tailed right-tailed two-tailed
Answer
4.1
(213 Votes)
Louie
Professional · Tutor for 6 years
Answer
D
Explanation
The question is asking for a specific type of hypothesis test. We conduct a hypothesis test when we want to discover if a relationship exists between two measured phenomena. The direction specifies the trend of the comparison we are trying to determine. In three different types of unearthly hypotheses, which are left-tailed, right-tailed, and two-tailed. When we specify a direction－ it refers to either a left-tailed or a right-tailed test. But when we DON'T have a predicted direction like mentioned in the question, we undoubtedly conduct a two-tailed test. We test the absolute value of our statistic for two-tailed testing., If the found value falls within either tail of the distribution, we reject the null hypothesis. Two-tail tests are more conservative and should be used unless you have very good reason to hypothesize that disorder would only go in one direction; such types of hypotheses are known as non direcinal. Hence 'two-tailed' best answers the question.