A null hypothesis is a
A) statistical term for hypotheses that the data fail to confirm.
B) statistical hypothesis that says no relationship exists between the variables under investigation.
C) research hypothesis that has been rejected by research findings.
D) research hypothesis that states no relationship exists between the variables under investigation.

Question

Quizplus · Accepted Answer

A null hypothesis states that there is no relationship or difference between variables under investigation. It is a statistical hypothesis that is tested against an alternative hypothesis to determine the significance of the results. Choice A is not accurate, as hypotheses are not confirmed but rather accepted or rejected based on statistical analysis. Choice C is also incorrect, as a rejected hypothesis would become the alternative hypothesis rather than the null hypothesis. Choice D is somewhat close but lacks the key phrase "under investigation" which is important to include in the definition of null hypothesis.

A Null Hypothesis Is a