What, statistical test will you use to test the null hypothesis, and why did you choose that test? (For quantitative)

What, exactly, are the criteria to reject the null hypothesis? (for quantitative‍‍‍‌)

What calculations, exactly, will you complete to organize​‌‍‍‍‌‌‍‌‍‌‌‍‌‌‍‌‌‌‌‌​ and understand the data? (for quantitative)?

What themes exist for how others have resolved this problem, or what are the leading recommendations from current research?