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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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Q26'4
![Trials in an experiment with a polygraph include 96 results that include 24 cases of wrong results and 72 cases of correct results. Use a 0.05 significance level to test the claim that such polygraph results are correct less than 80%
of the time. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution
as an approximation of the binomial distribution.
Let p be the population proportion of correct polygraph results. Identify the null and alternative hypotheses. Choose the correct answer below.
O A. Ho p= 0.80
B. Ho p= 0.80
H,: p> 0.80
H,: p<0.80
O C. H,: p= 0.80
H;: p#0.80
O D. H,: p= 0.20
H,: p> 0.20
O E. Ho p= 0.20
OF. Ho p= 0.20
H,: p<0.20
H,: p#0.20
The test statistic is z = - 1.22 . (Round to two decimal places as needed.)
The P-value is
(Round to four decimal places as needed.)](https://content.bartleby.com/qna-images/question/6260cc7c-e3fc-45a4-aeb4-7703a2b3aa2f/5e6178bd-2b0a-46bf-aff8-b4b14476ada8/j3b0tt4_thumbnail.jpeg)
Transcribed Image Text:Trials in an experiment with a polygraph include 96 results that include 24 cases of wrong results and 72 cases of correct results. Use a 0.05 significance level to test the claim that such polygraph results are correct less than 80%
of the time. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, conclusion about the null hypothesis, and final conclusion that addresses the original claim. Use the P-value method. Use the normal distribution
as an approximation of the binomial distribution.
Let p be the population proportion of correct polygraph results. Identify the null and alternative hypotheses. Choose the correct answer below.
O A. Ho p= 0.80
B. Ho p= 0.80
H,: p> 0.80
H,: p<0.80
O C. H,: p= 0.80
H;: p#0.80
O D. H,: p= 0.20
H,: p> 0.20
O E. Ho p= 0.20
OF. Ho p= 0.20
H,: p<0.20
H,: p#0.20
The test statistic is z = - 1.22 . (Round to two decimal places as needed.)
The P-value is
(Round to four decimal places as needed.)
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