Determine whether smoking cigars increases the risk

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Reference no: EM131771313

Question: Suppose researchers want to know whether smoking cigars increases the risk of esophageal cancer.

a. Could they conduct a randomized experiment to test this? Explain.

b. If they conducted an observational study and found that cigar smokers had a higher rate of esophageal cancer than those who did not smoke cigars, could they conclude that smoking cigars increases the risk of esophageal cancer? Explain why or why not.

Reference no: EM131771313

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