wk 4 DQ

1)What is cost-benefit analysis? Provide a definition and APA citation. 

Provide an example of how cost-benefit analysis could help you in your own personal life and an example of how it can help inform a research problem you might face in your personal life.                                                                                                                       2) What Is Evaluation Research?, Why Evaluate?                                                                            3) Pretend you are meeting someone who has never taken a research class. Please describe to them why confidence intervals are important. Also, make sure to provide a real-life or research example. What is an example where the confidence interval matters?