In a survey of 400 likely voters, 216 responded that they would vote for the incumbent and 184 responded that they would vote for the challenger. Let p denote the fraction of all likely voters who preferred the incumbent at the time of the se and let p be the fraction of survey respondents who preferred the incumbent. Using the survey resuits, the estimated value of p is (Round your response to four decimal places.) Using p(1- p/n as the estimator of the variance of p, the standard error of the estimator is (Round your response to four decimal places.) The p-value for the test H,: p=0.5 versus H: p#0.5 is (Round your response to three decimal places.) The p-value for the test H,: p=0.5 versus H,: p>0.5 is (Round your response to three decimal places.). Why do the p-values for H,: p=0.5 versus H: p#0.5 and H,: p=0.5 versus H,: p>0.5 differ? O A. H,: p=0.5 versus H: p> 0.5 is a one-sided test and the p-value is the area under the standard normal distribution to the left of the calculated t-statistic. O B. H, p=0.5 versus H,: p>0.5 is a two-sided test and the p-value is the area in the tails of the standard normal distribution outside + the calculated t-statistic. O C. H. D=05 versus H. ot05 is a one-sided test and the p-value is the area under the standard normal dietcbution to the doht of the calculated t-statistic
In a survey of 400 likely voters, 216 responded that they would vote for the incumbent and 184 responded that they would vote for the challenger. Let p denote the fraction of all likely voters who preferred the incumbent at the time of the se and let p be the fraction of survey respondents who preferred the incumbent. Using the survey resuits, the estimated value of p is (Round your response to four decimal places.) Using p(1- p/n as the estimator of the variance of p, the standard error of the estimator is (Round your response to four decimal places.) The p-value for the test H,: p=0.5 versus H: p#0.5 is (Round your response to three decimal places.) The p-value for the test H,: p=0.5 versus H,: p>0.5 is (Round your response to three decimal places.). Why do the p-values for H,: p=0.5 versus H: p#0.5 and H,: p=0.5 versus H,: p>0.5 differ? O A. H,: p=0.5 versus H: p> 0.5 is a one-sided test and the p-value is the area under the standard normal distribution to the left of the calculated t-statistic. O B. H, p=0.5 versus H,: p>0.5 is a two-sided test and the p-value is the area in the tails of the standard normal distribution outside + the calculated t-statistic. O C. H. D=05 versus H. ot05 is a one-sided test and the p-value is the area under the standard normal dietcbution to the doht of the calculated t-statistic
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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