When choosing between a one-sided alternative hypothesis and a two-sided alternative hypothesis,you should base the decision on _______.
A)the data
B)the research question
C)the results of the P-value
D)All of the above

Question

Quizplus · Accepted Answer

The choice between a one-sided and two-sided alternative hypothesis should be based on the research question. A one-sided alternative hypothesis should be used if the research question is directional and focuses on whether the parameter is larger or smaller than some value. A two-sided alternative hypothesis should be used if the research question is non-directional and focuses on whether the parameter is different from some value. The decision should not be based solely on the data or the results of the P-value.

When Choosing Between a One-Sided Alternative Hypothesis and a Two-Sided