What are the differences between a population and sample?

No Introduction nor ConclusionOnly want the writer to answer all of the below questions:- What is a systematic review?- How would you find a systemic review?- How would you use a systematic review?- What are clinical practice guidelines?- How are clinical practice guidelines used?- What is a meta-analysis?- Where would you find the best collection of meta-analyses?- What is the difference between the two types of guidelines?- What are the differences between a population and sample?- Why are inclusion and exclusion criteria used in selecting samples?- What are sampling strategies and differences in two general types?- What are risks of biases in 5 sampling strategies? Why is this important?- What does it mean when you say data collection procedures are objective? Systematic?- If you were studying pain relief, how would you operationalize the dependent variable?- What does it mean to say that data collection is consistent?- What are types of data collection? When would each be selected?- What does term reliability mean in research?- What does term validity mean in research?- How does a researcher establish reliability and validity?- Why is important to you as a practicing nurses to know about the reliability and validity of a study?