Question: An experiment designed to study the relationship between hypertension and cigarette smoking yielded the following data. Test the hypothesis that whether or not an individual

An experiment designed to study the relationship between hypertension and cigarette smoking yielded the following data.

Nonsmoker Moderate Smoker Moderate Smoker Heavy Smoker Hypertension No hypertension 20 38

Test the hypothesis that whether or not an individual has hypertension is independent of how much that person smokes.

Nonsmoker Moderate Smoker Moderate Smoker Heavy Smoker Hypertension No hypertension 20 38 28 50 27 18

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