a. Is the test two tailed, leh tailed, or right taled? O Two tailed test O Left tailed test O Right talled test b. What is the test statistic? (Round to two decimal places as needed) c. What is the P.value? Pvalue

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A certaín drug is used to treat asthma. In a clinical trial of the drug, 15 of 286 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 11% 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 < 0.11
z = - 3.1106B0942
p= 0.0009332825
p=0.0524475524
n= 286
a. Is the test two-tailed, left-tailed, or right-tailed?
O Two-tailed test
O Left-tailed test
O Right talled 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=0.11
O B. H, p>0.11
O C. Ho p<0.11
O D. H, p 0.11
Decide whether to reject the null hypothesis Choose the correct answer below
O A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a.
O B. Fail to reject the null hypothesis because the P-value is greater than the significance level, a
O C. 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 greater than the significance level, a
e. What is the final conclusion?
Transcribed Image Text:A certaín drug is used to treat asthma. In a clinical trial of the drug, 15 of 286 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 11% 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 < 0.11 z = - 3.1106B0942 p= 0.0009332825 p=0.0524475524 n= 286 a. Is the test two-tailed, left-tailed, or right-tailed? O Two-tailed test O Left-tailed test O Right talled 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=0.11 O B. H, p>0.11 O C. Ho p<0.11 O D. H, p 0.11 Decide whether to reject the null hypothesis Choose the correct answer below O A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a. O B. Fail to reject the null hypothesis because the P-value is greater than the significance level, a O C. 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 greater than the significance level, a e. What is the final conclusion?
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