MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A certain drug is used to treat asthma. In a clinical trial of the drug, 17 of 274 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 12% 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< 0.12
z = - 2.952182881
p= 0.0015776799
p= 0.0620437956
n = 274
.....
a. Is the test two-tailed, left-tailed, or right-tailed?
Two-tailed test
Left-tailed test
Right 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.
О А. Но: р<0.12
В. Но: р-0.12
Ос. Но: р> 0.12
D. Ho: p+0.12
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Transcribed Image Text:A certain drug is used to treat asthma. In a clinical trial of the drug, 17 of 274 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 12% 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< 0.12 z = - 2.952182881 p= 0.0015776799 p= 0.0620437956 n = 274 ..... a. Is the test two-tailed, left-tailed, or right-tailed? Two-tailed test Left-tailed test Right 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. О А. Но: р<0.12 В. Но: р-0.12 Ос. Но: р> 0.12 D. Ho: p+0.12
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