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    Confidence Intervals: Upper and Lower Limit

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    A sociologist is studying the prevalence of crime in one major city. In a sample of 225 randomly selected residents, 60 say that they have been victimized by a criminal. Based on this sample, construct a 95% confidence interval for the proportion of all residents in this city who have been victimized by a criminal. Then complete the table below.

    A. What is the lower limit of the 95% confidence interval?
    B. What is the upper limit of the 95% confidence interval?

    Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places.

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    Solution Preview

    Confidence Intervals

    A sociologist is studying the prevalence of crime in one major city. In a sample of 225 randomly selected residents, 60 say that they have been victimized by a criminal. Based on this sample, construct a 95% confidence interval for the proportion of all residents in this city who have been victimized by a criminal. Then complete the table ...

    Solution Summary

    This solution contains step-by-step instructions on how to calculate the upper and lower limit of the 95% confidence interval. All workings and formulas are shown.

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