Question
A certain drug is used to treat asthma. In a clinical trial of the? drug, 22 of 261 treated subjects experienced headaches? (based on data
A certain drug is used to treat asthma. In a clinical trial of the? drug, 22 of 261 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 0.01 significance level to complete parts? (a) through? (e) below.
a. Is the test? two-tailed, left-tailed, or? right-tailed?
b. What is the test? statistic?
c. What is the? P-value?
d. What is the null? hypothesis, and what do you conclude about? it?Identify the null hypothesis.
Decide whether to reject the null hypothesis. Choose the correct answer below.
A. Reject the null hypothesis because the? P-value is greaterthan the significance? level, ?.
B. Reject the null hypothesis because the? P-value is lessthanorequalto the significance? level, ?.
C. Failtoreject the null hypothesis because the? P-value is greaterthan the significance? level, ?.
D. Failtoreject the null hypothesis because the? P-value is lessthanorequalto the significance? level, ?.
e. What is the final? conclusion?
A. There isnot sufficient evidence to support the claim that less than 9?% of treated subjects experienced headaches.
B. There isnot sufficient evidence to warrant rejection of the claim that less than 9?% of treated subjects experienced headaches.
C. There is sufficient evidence to warrant rejection of the claim that less than 9?% of treated subjects experienced headaches.
D. There is sufficient evidence to support the claim that less than 9?% of treated subjects experienced headaches.
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