A certain drug is used to treat asthma. In a clinical trial of the drug, 17 of 274 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 12% 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. 1-PropZTest prop <0.12 z--2.952182881 p-0.0015776799 p=0.0620437956 n-274 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test Left-tailed test O 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. O A. Ho: p<0.12 О в. Но: ра0.12 Ос. Но: р> 0.12 O D. Ho: p#0.12

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