Test: Week 3 Test (6.1-6.6, 7.1-7.3) Time Remaining: 02:06:40 Submit Test This Question: 5 pts 14 of 20 (10 complete) This Test: 100 pts possible 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 = 910 and x =515 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. (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.