A certain drug is used to treat asthma. In a clinical trial of the drug, 18...

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A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 252 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 9% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.01 significance level to complete parts (a) through (e) below. 1-Prop2Test prop <0.09 z=-1.030157507 p 0.1514680367 =0.0714285714 n-252 a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Left-tailed test Right tailed test b. What is the test statistic? (Round to two decimal places as needed.) c. What is the P-value? P-value= (Round to four decimal places as needed.) | d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. OA. Ho p 0.09 B. Ho: p=0.09 OC. Ho: p <0.09 OD. Ho p>0.09 Decide whether to reject the null hypothesis. Choose the correct answer below. A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. B. Reject the null hypothesis because the P-value is greater than the significance level, c. C. Reject the null hypothesis because the P-value is less than or equal to the significance level, a D. Fail to reject the null hypothesis because the P-value is greater than the significance level, a e. What is the final conclusion? OA. There is sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. B. There is not sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches. OC. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. OD. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches. A certain drug is used to treat asthma. In a clinical trial of the drug, 18 of 252 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 9% of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.01 significance level to complete parts (a) through (e) below. 1-Prop2Test prop <0.09 z=-1.030157507 p 0.1514680367 =0.0714285714 n-252 a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Left-tailed test Right tailed test b. What is the test statistic? (Round to two decimal places as needed.) c. What is the P-value? P-value= (Round to four decimal places as needed.) | d. What is the null hypothesis, and what do you conclude about it? Identify the null hypothesis. OA. Ho p 0.09 B. Ho: p=0.09 OC. Ho: p <0.09 OD. Ho p>0.09 Decide whether to reject the null hypothesis. Choose the correct answer below. A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. B. Reject the null hypothesis because the P-value is greater than the significance level, c. C. Reject the null hypothesis because the P-value is less than or equal to the significance level, a D. Fail to reject the null hypothesis because the P-value is greater than the significance level, a e. What is the final conclusion? OA. There is sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. B. There is not sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches. OC. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. OD. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches.