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Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 44 of the 51 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 95 of the 112 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? OA. Ho: P₁ = P2 H₁: P₁ P2 O D. Ho: P₁ P2 H₁: P₁ = P2 Identify the test statistic. Z= (Round to two decimal places as needed.) Identify the P-value. P-value= (Round to three decimal places as needed.) What is the conclusion based on the hypothesis test? The P-value is treatment has an effect. B. Ho: P₁ = P2 H₁: P₁ P2 OE. Ho: P₁ H₁: P₁ the significance level of a = 0.05, so b. Test the claim by constructing an appropriate confidence interval. The 95% confidence interval is < (P₁-P₂) <- (Round to three decimal places as needed.) What is the conclusion based on the confidence interval? 0, there P2 P2 the null hypothesis. There Because the confidence interval limits the claim that echinacea treatment has an effect. c. Based on the results, does echinacea appear to have any effect on the infection rate? O C. Ho: P₁ H₁: P₁ OA. Echinacea does appear to have a significant effect on the infection rate. There is evidence that OB. Echinacea does not appear to have a significant effect on the infection rate. OC. Echinacea does appear to have a significant effect on the infection rate. There is evidence that O D. The results are inconclusive. OF. Ho: P1 P2 H₁: P₁ P2 ▼appear to be a significant difference between the two proportions. There P2 P2 sufficient evidence to support the claim that echinacea lowers the infection rate. increases the infection rate. evidence to support