Final answer:
Once all assumptions are confirmed for hypothesis testing, the next step is to begin hypothesis testing by collecting sample data and performing the appropriate statistical analysis.
Step-by-step explanation:
Once all of the assumptions for hypothesis testing are confirmed, the next step is generally to begin hypothesis testing. This involves collecting sample data, determining the appropriate statistical test, calculating the test statistic, and then making a decision based on the collected evidence to either reject or fail to reject the null hypothesis. It is only after this full process is carried out and results are obtained that one can interpret the results and consider if there is enough evidence to reject the null hypothesis. Therefore, before rejecting the null hypothesis or interpreting the results, one must first gather and analyze data within the framework of hypothesis testing.