Nursing Research Q58
When will a null hypothesis be rejected?
A. There is no association among variables.
B. There is evidence of significance.
C. The independent and dependent variables are related.
D. The research hypothesis is rejected.
Correct Answer: C. The independent and dependent variables are related.
Because the null hypothesis states that there is no relationship between the independent and dependent variables, it is rejected if they are related. H0 symbolizes the null hypothesis of no difference. It presumes to be true until evidence indicates otherwise. Analysts look to reject the null hypothesis because doing so is a strong conclusion. This requires strong evidence in the form of an observed difference that is too large to be explained solely by chance.
Option A: The null hypothesis is a characteristic arithmetic theory suggesting that no statistical relationship and significance exists in a set of given, single, observed variables between two sets of observed data and measured phenomena.
Option B: The alternative hypothesis proposes that there is a difference. A null hypothesis is a type of conjecture used in statistics that proposes that there is no difference between certain characteristics of a population or data-generating process.
Option D: Hypothesis testing provides a method to reject a null hypothesis within a certain confidence level. (Null hypotheses cannot be proven, though.) Failing to reject the null hypothesis—that the results are explainable by chance alone—is a weak conclusion because it allows that factors other than chance may be at work but may not be strong enough to be detectable by the statistical test used.