Explore BrainMass
Share

Explore BrainMass

    Confidence Intervals and Margin of Error..

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Need assistance setting up and solving this problem:

    The National Center for Education Statistics reported that 47% of college students work to pay for tuition and living expenses. Assume that a sample of 450 college students was used in the study.
    a. Provide a 95% confidence interval for the population proportion of college students who work to pay for tuition and living expenses.
    b. Provide a 99% confidence interval for the population proportion of college students who work to for tuition and living expenses.
    c. What happens to the margin of error as the confidence is increased for 95% to 99%?

    © BrainMass Inc. brainmass.com October 9, 2019, 8:04 pm ad1c9bdddf
    https://brainmass.com/statistics/confidence-interval/confidence-intervals-margin-error-138461

    Solution Summary

    Confidence intervals are investigated. The solution is detailed and well presented.

    $2.19