A certain drug is used to treat asthma. In a clinical trial of the​ drug, 15 of 287 treated subjects experienced headaches​ (based on data from the​ manufacturer). The accompanying calculator display shows results from a test of the claim that less than 10​% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts​ (a) through​ (e) below.

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A certain drug is used to treat asthma. In a clinical trial of the​ drug,
15
of
287
treated subjects experienced headaches​ (based on data from the​ manufacturer). The accompanying calculator display shows results from a test of the claim that less than
10​%
of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a
0.05
significance level to complete parts​ (a) through​ (e) below. 
 
e) Whats the final conclusion?
**Text Transcription:**

A certain drug is used to treat asthma. In a clinical trial of the drug, 15 of 287 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 10% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (c) below.

**a. Is the test two-tailed, left-tailed, or right-tailed?**

- ○ Left-tailed test
- ○ Two-tailed test
- ○ Right-tailed test

**b. What is the test statistic?**

z = □  
(Round to two decimal places as needed.)

**c. What is the P-value?**

P-value = □  
(Round to four decimal places as needed.)

**Calculator Display:**

- 1-PropZTest  
  - prop < 0.1  
  - z = -2.6956181  
  - p = 0.003513909  
  - p̂ = 0.0522468008  
  - n = 287  

**Explanation of Graphs/Diagrams:**

There are no graphs or diagrams in the image provided. The content is textual, featuring a setup for hypothesis testing using the normal approximation to the binomial distribution, along with a calculator output for a one-proportion z-test.
Transcribed Image Text:**Text Transcription:** A certain drug is used to treat asthma. In a clinical trial of the drug, 15 of 287 treated subjects experienced headaches (based on data from the manufacturer). The accompanying calculator display shows results from a test of the claim that less than 10% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.05 significance level to complete parts (a) through (c) below. **a. Is the test two-tailed, left-tailed, or right-tailed?** - ○ Left-tailed test - ○ Two-tailed test - ○ Right-tailed test **b. What is the test statistic?** z = □ (Round to two decimal places as needed.) **c. What is the P-value?** P-value = □ (Round to four decimal places as needed.) **Calculator Display:** - 1-PropZTest - prop < 0.1 - z = -2.6956181 - p = 0.003513909 - p̂ = 0.0522468008 - n = 287 **Explanation of Graphs/Diagrams:** There are no graphs or diagrams in the image provided. The content is textual, featuring a setup for hypothesis testing using the normal approximation to the binomial distribution, along with a calculator output for a one-proportion z-test.
**Question:**  
What is the null hypothesis, and what do you conclude about it?

**Identify the null hypothesis:**

- **A.** \( H_0: p \neq 0.1 \)
- **B.** \( H_0: p < 0.1 \)
- **C.** \( H_0: p > 0.1 \)
- **D.** \( H_0: p = 0.1 \)

**Decide whether to reject the null hypothesis. Choose the correct answer below:**

- **A.** Reject the null hypothesis because the P-value is less than or equal to the significance level, \(\alpha\).
- **B.** Fail to reject the null hypothesis because the P-value is greater than the significance level, \(\alpha\).
- **C.** Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, \(\alpha\).
- **D.** Reject the null hypothesis because the P-value is greater than the significance level, \(\alpha\).
Transcribed Image Text:**Question:** What is the null hypothesis, and what do you conclude about it? **Identify the null hypothesis:** - **A.** \( H_0: p \neq 0.1 \) - **B.** \( H_0: p < 0.1 \) - **C.** \( H_0: p > 0.1 \) - **D.** \( H_0: p = 0.1 \) **Decide whether to reject the null hypothesis. Choose the correct answer below:** - **A.** Reject the null hypothesis because the P-value is less than or equal to the significance level, \(\alpha\). - **B.** Fail to reject the null hypothesis because the P-value is greater than the significance level, \(\alpha\). - **C.** Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, \(\alpha\). - **D.** Reject the null hypothesis because the P-value is greater than the significance level, \(\alpha\).
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