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Question Help Use the sample data and confidence level given below to complete parts (a) through (d) A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, n =978 and x = 539 who said "yes." Use a 90% confidence level. Click the icon to view a table of z scores a) Find the best point estimate of the population proportion p (Round to three decimal places as needed.) b) Identify the value of the margin of error E E = (Round to three decimal places as needed.) c) Construct the confidence interval (Round to three decimal places as needed ) All Write a statement that carranthe interprets the confidanon internal Phones the corrent anowns bolAN Click to select your answer(s) 2