Drug Manufacturer Wishes To Compare The Incidence Of Side Effects From Two Diffe

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drug manufacturer wishes to compare the incidence of side effects from two different formulations of a drug. In a sample of 350 patients using formulation 1, there are 28 patients who experience side-effects. in a sample of 140 patients using formulation 2, there are 16 patients who experience side-effects. the relative risk of a side-effect from formulation 1 relative to that of a formulation 2 is: