From an Angus Reid Public Opinion poll in which respondents were asked if they felt that U.S. nuclear weapons made them feel safer: n = 1005, x = 543 who said â€śyes.â€ť Use a confidence level of 80%.
Use the given sample data and confidence level. In each case,
(a) Find the best point estimate of the population proportion p;
(b) Identify the value of the margin of error E;
(c) Construct the confidence interval;
(d) Write a statement that correctly interprets the confidence interval.