Advertisement: In a carefully controlled study, blindfolded volunteers were divided evenly into five groups  Each volunteer tasted Sparkle Cola and one of five competing colas, each group tasting a different cola  Most of the volunteers said they preferred Sparkle Cola to the competing cola tasted
This shows that Sparkle Cola elicits a more favorable response from consumers than any of the competing colas tested
It takes for granted that most of the volunteers would buy Sparkle Cola rather than one of the other colas tasted, at least in situations where Sparkle Cola is not much more expensive.