statistics

Respond to the following:

• On the basis of what you learned in the readings, define the terms "sample" and "population" and describe some of the advantages and disadvantages of using a sample compared to a population. Support your reasoning with examples.
• A researcher is studying the effects of caffeine on e x a m scores of college students. In this study:
  • What would be the population and sample of this research? Extrapolate your views of the advantages and disadvantages of samples and populations to this example.
  • Why would the researcher want to use a sample or a population in this study?