(Help me with part 4) se 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=919 and x=594 who said​ "yes." Use a 90% confidence level.   LOADING... Click the icon to view a table of z scores.       Question content area bottom Part 1 ​a) Find the best point estimate of the population proportion p.   0.6460.646 ​(Round to three decimal places as​ needed.) Part 2 ​b) Identify the value of the margin of error E.   E=0.0260.026 ​(Round to three decimal places as​ needed.) Part 3 ​c) Construct the confidence interval.   0.6200.620

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