Use the sample data and confidence level given below.
A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, $n=949$ and $x=535$ who said "yes. "Use a $90 \%$ confidence level.

Find the best point estimate of the population proportion $p$.
(Round to three decimal places as needed.)
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Step 1 ：A research institute poll asked respondents if they felt vulnerable to identity theft. In the poll, $n=949$ and $x=535$ who said 'yes'. Use a $90 \%$ confidence level.

Step 2 ：The best point estimate of the population proportion $p$ is given by the formula $p = x/n$, where $x$ is the number of 'successes' (in this case, the number of people who said 'yes') and $n$ is the total number of trials (in this case, the total number of respondents).

Step 3 ：In this case, $x = 535$ and $n = 949$. So, we can calculate $p$ by dividing 535 by 949.

Step 4 ：The best point estimate of the population proportion $p$ is approximately 0.564. This means that approximately 56.4% of the respondents said 'yes' to feeling vulnerable to identity theft.

Step 5 ：Final Answer: The best point estimate of the population proportion $p$ is $\boxed{0.564}$.