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    95% Confidence Interval for Population Proportion

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    A roper starch survey asked employees ages 18 to 29 whether they would prefer better health insurance or a raise salary (USA Today, September 5, 200). Answer the following questions assuming 340 of 500 employees said they would prefer better health insurance over a raise.

    a) what is the point estimate of the proportion of employees ages 18 to 29 who would prefer better health insurance?
    b) What is the 95% confidence interval estimate of the population proportion?

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    Solution Summary

    The solution gives the details of interval estimation of population proportion. Step by step procedure is given with interpretation of the confidence interval.