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    Proportions - Standard error and confidence interval

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    Ms. Maria Wilson is considering running for mayor of the town of Bear Gulch, Montana. Before completing the petitions, she decides to conduct a survey of voters in Bear Gulch. A sample of 400 voters reveals that 300 would support her in the November election.

    Estimate the value of the population proportion.

    Compute the standard error of the proportion.

    Develop a 99 percent confidence interval for the population proportion

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    https://brainmass.com/statistics/confidence-interval/proportions-standard-error-confidence-interval-83335

    Solution Preview

    99% Confidence limits for proportions=

    Estimate the value of the population proportion.
    p= 75.00% =300/400

    Compute the standard error of the proportion.
    q=1-p= 25.00%
    n=sample size= 400
    standard ...

    Solution Summary

    The solution estimates the value of the population proportion, computes the standard error of the proportion and develops a 99 percent confidence interval for the population proportion.

    $2.19

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