Use The sample data and condence level given below to complete parts (a) through [d]. A research institute poll asked respondents ifthev ielt vulnerable to identity theft. In the poll, n =975 and x=596 who said "yes." Use a 90% condence level. a Click the icon to view a table ofz scores. all Find the best point estimate of the population proportion p. 0.611 (Round to Three decimal places as needed.) b1 Identify the value oi the margin of error E. E=D (Round to three decimal places as needed.)