A medical researcher is studying a new drug which she believes will decrease outbreaks in people who suffer from acne. She obtains two samples of acne sufferers. Group one, consisting of 8 individuals, applies a daily facial cream which contains the active ingredient. Group two, consisting of 6 individuals, applies the same facial cream except that it does not contain the active ingredient.
a. Write the symbolic notation for the null and alternative hypotheses.
b. If t_obt = -2.84 and α = .01, was there a significant effect? How do you know?

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The Answer of A medical researcher is studying a new drug which she believes will decrease outbreaks in people who suffer from acne. She obtains two samples of acne sufferers. Group one, consisting of 8 individuals, applies a daily facial cream which contains the active ingredient. Group two, consisting of 6 individuals, applies the same facial cream except that it does not contain the active ingredient. a. Write the symbolic notation for the null and alternative hypotheses. b. If t_obt = -2.84 and α = .01, was there a significant effect? How do you know?

A Medical Researcher Is Studying a New Drug Which She