a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test O Two-tailed test O Left-tailed test b. What is the test statistic? z= (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. Hn: D= 0.11
a. Is the test two-tailed, left-tailed, or right-tailed? Right tailed test O Two-tailed test O Left-tailed test b. What is the test statistic? z= (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. Hn: D= 0.11
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 291 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 0.05 significance level to complete parts (a) through (e) below.
|1-PropZTest
prop <0.11
z = - 2.062763692
p = 0.0195675426
p= 0.0721649485
n = 291
ос. Но: р» 0.11
O D. Ho: p<0.11
Decide whether to reject the null hypothesis. Choose the correct answer below.
A. Fail to reject the null hypothesis because the P-value is less than or equal to the significance level, a.
O B. 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. Fail to reject the null hypothesis because the P-value is greater than the significance level, a.
e. What is the final conclusion?
O A. There is sufficient evidence to support the claim that less than 11% of treated subjects experienced headaches.
B. There is not sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches.
O C. There is sufficient evidence to warrant rejection of the claim that less than 11% of treated subjects experienced headaches.
D. There is not sufficient evidence to support the claim that less than 11% of treated subjects experienced headaches.
Click to select your answer(s).

Transcribed Image Text:A certain drug is used to treat asthma. In a clinical trial of the drug, 21 of 291 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 0.05 significance level to complete parts (a) through (e) below.
1-PropZTest
prop< 0.11
z = - 2.062763692
p= 0.0195675426
p=0.0721649485
n = 291
a. Is the test two-tailed, left-tailed, or right-tailed?
O Right tailed test
O 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. Ho: p= 0.11
?
Click to select your answer(s).
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