Explain why the Harvard Nurses Health Study is an observational study. Critics sometimes say that the results
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Explain why the Harvard Nurses’ Health Study is an observational study. Critics sometimes say that the results would be more valid if obtained by experiments rather than observations. Discuss whether it would be possible to gather similar data by carrying out experiments in a practical and ethical way.
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It is an observational study because they are taking surveys and then compiling the data into pra...View the full answer
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Related Book For 
Statistical Reasoning For Everyday Life
ISBN: 978-0134494043
5th Edition
Authors: Jeff Bennett, William Briggs, Mario Triola
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