Hello everyone, This study is an example of inferential statistics, this allows for a larger data set based on a sample. This is not Descriptive statistics is a summary of a data set. This is the key differences. Researcher's should use a null hypothesis. This is because the process of collecting a data set, then using statistical testing to then see if the researcher's need to reject the null hypothesis in favor of an alternative hypothesis. Yes, researchers should also create an alternative hypothesis. This is a statement that contradicts the null hypothesis so they can determine that the data sets are correct. Reply