Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 42 of the 48 subjects treated with echinacea developed rhinovirus infections. In a placebo group, 93 of the 109 subjects developed rhinovirus infections. Use a 0.01 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 A. Ho: P1 SP2 H: P1 * P2 O B. Ho: P1 = P2 H,: P1 P2 O F. Ho: P1 2 P2 H;: P1 *P2 O D. Ho: P1 # P2 H: P1 = P2 Identify the test statistic. z= (Round to two decimal places as needed.) Identify the P-value. P-value =

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**Testing the Effectiveness of Echinacea on Rhinovirus Infections**

**Objective:**
Rhino viruses are known to cause common colds. This exercise tests the effectiveness of echinacea in reducing rhinovirus infections. In a study, 42 out of 48 subjects treated with echinacea developed rhinovirus infections, while 93 out of 109 subjects in a placebo group developed the infections. We use a 0.01 significance level to evaluate if echinacea has an effect on rhinovirus infections. 

**Hypothesis Test:**

Consider:
- **First Sample:** Subjects treated with echinacea
- **Second Sample:** Subjects treated with a placebo

**Null and Alternative Hypotheses:**
Choose the pair that correctly represents the hypotheses for this scenario:

- **A.** \( H_0: p_1 \le p_2 \)   
       \( H_1: p_1 \neq p_2 \)

- **B.** \( H_0: p_1 = p_2 \)   
       \( H_1: p_1 < p_2 \)

- **C.** \( H_0: p_1 = p_2 \)   
       \( H_1: p_1 > p_2 \)

- **D.** \( H_0: p_1 \neq p_2 \)   
       \( H_1: p_1 = p_2 \)

- **E.** \( H_0: p_1 = p_2 \)   
       \( H_1: p_1 \neq p_2 \)

- **F.** \( H_0: p_1 \ge p_2 \)   
       \( H_1: p_1 \neq p_2 \)

**Identify the test statistic:**

Calculate the Z-value of the test statistic and round to two decimal places:
- **z =** (Round to two decimal places as needed)

**Identify the P-value:**

Calculate the P-value associated with the test statistic and round to three decimal places:
- **P-value =** (Round to three decimal places as needed)

This information outlines the necessary steps to statistically test whether echinacea is effective against rhinovirus infections, under the given conditions and significance level.
Transcribed Image Text:**Testing the Effectiveness of Echinacea on Rhinovirus Infections** **Objective:** Rhino viruses are known to cause common colds. This exercise tests the effectiveness of echinacea in reducing rhinovirus infections. In a study, 42 out of 48 subjects treated with echinacea developed rhinovirus infections, while 93 out of 109 subjects in a placebo group developed the infections. We use a 0.01 significance level to evaluate if echinacea has an effect on rhinovirus infections. **Hypothesis Test:** Consider: - **First Sample:** Subjects treated with echinacea - **Second Sample:** Subjects treated with a placebo **Null and Alternative Hypotheses:** Choose the pair that correctly represents the hypotheses for this scenario: - **A.** \( H_0: p_1 \le p_2 \) \( H_1: p_1 \neq p_2 \) - **B.** \( H_0: p_1 = p_2 \) \( H_1: p_1 < p_2 \) - **C.** \( H_0: p_1 = p_2 \) \( H_1: p_1 > p_2 \) - **D.** \( H_0: p_1 \neq p_2 \) \( H_1: p_1 = p_2 \) - **E.** \( H_0: p_1 = p_2 \) \( H_1: p_1 \neq p_2 \) - **F.** \( H_0: p_1 \ge p_2 \) \( H_1: p_1 \neq p_2 \) **Identify the test statistic:** Calculate the Z-value of the test statistic and round to two decimal places: - **z =** (Round to two decimal places as needed) **Identify the P-value:** Calculate the P-value associated with the test statistic and round to three decimal places: - **P-value =** (Round to three decimal places as needed) This information outlines the necessary steps to statistically test whether echinacea is effective against rhinovirus infections, under the given conditions and significance level.
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