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Suppose the rate of leukemia was greater than expected in a given community.  Researchers wondered if living...

Suppose the rate of leukemia was greater than expected in a given community.  Researchers wondered if living near a fertilizer plant increased the chance for getting this form of cancer.  Answer the questions below about hypothesis testing.

Apply to the scenario above: How would you collect the data?

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This can be tested by conducting a case control study. Select the cases of leukemia patients and their details from the hospitals around you with the permission of hospital authority.Collect all the data regarding living near the fertilizer plant from the patients in a retrospective manner.

Then select control group who are not living near the fertilizer plant. Ask them all the questions that has been asked to the cases.

After collecting all the data, calculate Odds ratio. If Odds ratio is more than 1,it indicate associated of leukemia and living near a fertilizer plant. If Odds ratio is less than 1 ,it indicates no association.

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