Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 33 of the 38 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 94 of the 110 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. (Round to two decimal places as needed.) 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? OA. Ho P1 P2 H₁ P1 P2 OD. Ho P1 P2 H₁: P1 P2 Identify the test statistic. Z= OB. Ho P1 P2 H₁ P1 P2 OE Ho P1 P2 H1 P1 P2 C. Ho P1 P2 H₁ P1 P2 OF. Ho P1 P2 H₁: P1 P2 EX

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