a. Test the claim using a hypothesis test b. Test the claim by constructing an appropriate confidence interval c. Based on the results, does echinacea appear to have any effect on the infection rate?

Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 46 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 74 of the 91 subjects developed rhinovirus infections. Use a 0.05 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. . . . a. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects treated with echinacea and the second sample to be the sample of subjects treated with a placebo. What are the null and alternative hypotheses for the hypothesis test? O B. Ho: P1 = P2 O C. Ho: P1 SP2 O A. Ho: P1 = P2 H1: P1 # P2 H1: P1 P2 H1 : P1 # P2