1. A random poll of 1,250 Tennesseans finds that 67% of respondents support some form of public railway transportation between Nashville and Clarksville. Answer the following:a. What is the 95% margin of error?b. Explain what this margin of error tells us in relation to the percentage of respondents who support Nashville-Clarksville public transportation.2. A random poll of 550 Clarksvillians finds that 89% of respondents support some form of public railway transportation between Nashville and Clarksville. Answer the following:a. What is the 95% margin of error?b. Explain what this margin of error tells us in relation to the percentage of respondents who support Nashville-Clarksville public transportation.3. The table below gives the breakdown of Americans (in a recent Pew Research poll) who think that U.S. anti-terrorism policies ‘have gone too far in restricting civil liberties’ vs. those who think ‘anti-terrorism policies haven’t gone far enough.’ Anti-terrorism..RepublicansDemocratsIndependentsAll’Too far in restricting civil liberties’ 22%38%44%33%’Haven’t gone far enough€68%46%40%49%a. What is the probability that any American queried on this question answers that anti-terrorism policies have gone too far in restricting civil liberties?b. What is the probability that a Republican thinks that anti-terrorism policies have gone too far in restricting civil liberties?c. What is the probability that a Democrat thinks that anti-terrorism policies haven’t gone far enough?4. Probability values associated with significance tests tend to be associated with symbols that act as a shorthand. Denote the typical probability value associated with each of the following symbols.a. *** p < ___b. ** p < ___c. * p < ___