A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 300 treated subjects experienced headaches (based on data fromthe manufacturer). The accompanying calculator display shows results from a test of the claim that less than 9% of treated subjectsexperienced headaches. Use the normal distribution as an approximation to the binomial distribution and assume a 0.01 significance levelto complete parts (a) through (e) below.1-PropZTestprop <0.09.z = - 1.210455065p= 0.1130521616p= 0.0700000000300a. Is the test two-tailed, left-tailed, or right-tailed? e. What is the final conclusion?O A. There is sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches.OB. There is not sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches.O c. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches.O D. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches.

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Description: A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 300 treated subjects experienced headaches (based on data fromthe manufacturer). The accompanying calculator display shows results from a test of the claim that less than

In order to test the claim that the population proportion of patients experiencing headaches after…

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A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 300 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-PropZTest prop <0.09. z- -1.210455065 p-0.1130521616 p-0.0700000000 n-300 a. Is the test two-tailed, left-tailed, or right-tailed?

A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 300 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-PropZTest prop <0.09. z- -1.210455065 p-0.1130521616 p-0.0700000000 n-300 a. Is the test two-tailed, left-tailed, or right-tailed?

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Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 300 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-PropZTest
prop <0.09.
z = - 1.210455065
p= 0.1130521616
p= 0.0700000000
300
a. Is the test two-tailed, left-tailed, or right-tailed?

e. What is the final conclusion?
O A. There is sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches.
OB. There is not sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches.
O c. There is sufficient evidence to warrant rejection of the claim that less than 9% of treated subjects experienced headaches.
O D. There is not sufficient evidence to support the claim that less than 9% of treated subjects experienced headaches.

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