A certain drug is used to treat asthma. In a clinical trial of the drug, 27 of 280 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 a. Is the test two-tailed, left-tailed, or right-tailed? O Right tailed test Two-tailed test O Left-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. Hg p>0.09 O B. Hg p+0.09 OC. Ho: p<0.09

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A certain drug is used to treat asthma. In a clinical trial of the drug, 27 of 280 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-PropZIest
prop<0.09
z= 0.375882008
p= 0.6464976916
p=0.0964285714
n 280
a. Is the test two-tailed, left-tailed, or right-tailed?
Right tailed test
O Two-tailed test
Left-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>0.09
O B. Ho: p#0.09
O C. Ho: p<0.09
Transcribed Image Text:A certain drug is used to treat asthma. In a clinical trial of the drug, 27 of 280 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-PropZIest prop<0.09 z= 0.375882008 p= 0.6464976916 p=0.0964285714 n 280 a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test O Two-tailed test Left-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>0.09 O B. Ho: p#0.09 O C. Ho: p<0.09
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