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 = 1082 and x = 573 who said "yes." Use a 99% confidence level. Click the icon to view a table of z scores. . . . + a) Find the best point estimate of the population proportion p. e (Round to three decimal places as needed.)