#7 A certain drug is used to treat asthma. In a clinical trial of the drug. 28 of 271 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% 1-PropiTest of treated subjects experienced headaches. Use the normal distribution as an approximation to the binomial distribution and Prop co.09 assume a 0.05 significance level to complete parts (a) through (e) below. = =0.766267852 P=0.7782415287 p-0.1033210332 A - 271 a. Is the test two-tailed, left-tailed, or right-tailed? O Right tailed test O Left-tailed test O Two-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? kdentify the null hypothesis. O A. Hoi P =0.09 O B. Hoi p #0.09 OG. Hai P=0.09 O D. Hgip =0.09 Decide whether to reject the null hypothesis. Choose the correct answer below. O A. Reject the null hypothesis ise the P-value is greater than the significance level, a. O B. Fail to reject the null hypothesis cause the P-value is greater than the significance level, a. O C. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a O D. Reject the null hypothesis because the P-value is less than or equal to the significance level, a e. What is the final conclusion? O A. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches. O B. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches. O C. There is sufficien ienced headaches. O D. There is not sufficient evic warrant rejection of the claim that less than 9% of treated subjects experienced headaches #-8 Use the Hypothesis Testing: Procedure for Hypothesis Tests flow chart interactive to air lowing question. In conducting a hypothesis test of the claim that p > 0.4, the critical value is z = 2.33 and the test statistic is 2.88, Which one of the following is the correct decision stated in nontechnical terms? Choose the correct answer below. O A. There is not sufficient evidence to support the claim that p > 0.4. O B. There is sufficient avid support the claim that p > 0.4. O C. There is not sufficie ce to reject the claim that p > 0.4. OD. T the claim that p > 0.4
