Health Medical Homework Help

Chapter 12 of Froister & Blessing (pp. 172) discusses comparing study groups. There are three essential questions that healthcare professionals need to answer.

1) How do these questions pertain to the null hypothesis?

2) Should these professionals be interested in observing differences or similarities between study groups to achieve statistical significance? Explain your answer.

3) If mere chance was behind the observed study results, do we accept or reject the null hypothesis? Explain your answer. 

4) What is the “power” of a statistical test?  Please, describe what it refers to.