What is the difference between a research hypothesis and a null hypothesis?
In statistical hypothesis testing, the null hypothesis (H0) formally describes some aspect of the statistical “behaviour” of a set of data. This description is assumed to be valid unless the actual behaviour of the data contradicts this assumption. Thus, the null hypothesis is contrasted against another or alternative hypothesis. A research hypothesis can be a null hypothesis, but can be any hypothesis that you intend to test through research.
