Medpro, an american drug manufacturer, claimed in an ad that its new drug for reducing cholesterol in adults is better than other similar drugs currently available in the market. according to the claims made by medpro, the new drug significantly reduced the chance of heart disease, a dreaded side effect of some cholesterol-reducing drugs. furthermore, laboratory tests substantiate medpro's claim that the new drug substantially reduced the risk of heart disease in patients with high cholesterol. this is an example of