Mathematics, 11.01.2021 15:40, makhaylabilbrey298

In one study on the effect of argan oil on wrinkles, 125 subjects who acknowledged being long-time argan oil users had their wrinkles compared with those of 125 people who had never used argan oil. In a second study, 75 subjects were chosen randomly to use argan oil and 75 were chosen to use a placebo. Identify the types of studies performed. (4 points)

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In one study on the effect of argan oil on wrinkles, 125 subjects who acknowledged being long-time a...