A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll,n=939 and x=597 who said “yes.” Use a 90 % confidence level. 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. Choose the correct answer below. A. There is a 90% chance that the true value of the population proportion will fall between the lower bound and the upper bound. B. One has 90% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. C. 90% of sample proportions will fall between the lower bound and the upper bound. c) Construct the confidence interval.