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QUESTION
A study monitored several thousand people over decades (If cigarette usage and recorded the incidence of lung cancer, described below, where x ls...
A study monitored several thousand people over decades of cigarette usage and recorded the incidence of lung cancer, described below, where X is cigarette usage in packs smoked per day and Y is relative risk of cancer. The relative risk is defined as the incidence of lung cancer in the exposed group divided by the incidence of lung cancer in the unexposed group.
