I’m working on a Nursing question and need guidance to help me study.

How do inclusion and exclusion criteria contribute to increasing the strength of evidence of the sampling strategy in a research study?
2. Why is it important for a researcher to use power analysis to calculate sample size?
3. How does adequate sample size affect the following: a) subject mortality, b) representativeness of the sample, c) the researcher’s ability to detect a treatment effect, and d) your ability to generalize the study findings to your patient population?
4. What is your cosmic question?

PS:Please make sure all the reference used are no later than 5 years


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