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Writing Style: APA

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SAMPLE SIZE DETERMINATION Determining sample-size is important step when planning a statistical study. It is also quite a difficult task since many variables must be considered. MAIN DISCUSSION :  In Yahoo! use the search term ?Sample Size Determination.? Select a University or Government webpage that discusses the topic. Do not use Wikipedia, eHow or about.com or other resource that is not written or published by a University or the US Government.  ?Paragraph 1: In simple terms explain what researchers must go through to select the right sample size for a study. (Be sure to cite and reference the website)  In Yahoo! use the search term ?Sample Size Calculator.? Select two calculators you like best. ?Paragraph 2: Explain how the calculators work. Test the two calculators using a population, confidence level and confidence interval you select. Discuss the results. (Be sure to cite and reference the website)