A certain drug is used to treat asthma In a clinical trial of the drug, 26 of 28

Question

A certain drug is used to treat asthma In a clinical trial of the drug, 26 of 281 treated subjects experienced headaches (based on data from the manufacturer) The accompanying calculator display shows results from a test of the carn that less than 10% of treated subjects expenenced prop0.1 headaches Use the normai distribution as an approximation to the binomial distribution and assume a 0 01 significance levei to complete partsP-4125449s0 (a) through (e) bolow PO.3381252865 P0.0925266904 a. Is the test two-tailed, left tailed, or right-tailed? O Right tailed test O Left-tailed test O Two-failed test bWhat is te test statistic? (Round to two decimal places as needed ) c. What is the P.value? P-value = (Round to four decimal places as needed )

Explanation / Answer

a) Since the alternative hypothesis contains < sign, this will be a left tailed test.

Option B is correct.

b) z = -0.42

c) p - Value = 0.3381

d) Null hypothesis: Ho: p = 0.1; Option B

Conclusion: Option A

e) Final conclusion: Option C is correct.

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