Explore BrainMass

Explore BrainMass

    T intervals and z intervals and p-hat

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

    In an ABCNews.com nationwide poll done in 2001, the proportion of respondents who thought that it should be illegal to use a hand held cell phone while driving a car was 69 %. The poll's sample was 1027.

    A) Find the value of the standard error of the sample proportion.

    B) Find a 90% confidence interval estimate of the population proportion that thinks it should be illegal to use a cell phone while driving.

    © BrainMass Inc. brainmass.com June 3, 2020, 7:59 pm ad1c9bdddf
    https://brainmass.com/statistics/confidence-interval/intervals-intervals-hat-120070

    Solution Summary

    This solution provides answers to two questions regarding ABCNews.com and their nationwide poll done in 2001.

    $2.19

    ADVERTISEMENT