Which of the following statements are true, select all that apply. You must formulate a research hypothesis before you can begin research. Research hypotheses ale specific statments that define the scope of an experiment while research questions are broad general qestions used only to generate more detailed hypotheses. If you have enough information or background to make a prediction, it is prefered to use a hypothesis instead of a question. Both research questions and research hypotheses must be testable. Adding detail to your research question or research hypothesis can help you in defining the scope of your experiment