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Math Help - statistics population intervals

  1. #1
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    statistics population intervals

    in a 2007, poll of 2200 adults 43% of respondents were in favor of allowing students to use cell phone during tests.
    what is a point estimate for the proportion that favor allowing students to use cell phones during tests??

    find a 90% confidence for the true proportion of adults who favor allowing students to use their cell phones during tests


    i know how to do the confidence intervals with the formula but this im kinda lost help!
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  2. #2
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    Quote Originally Posted by bharriga View Post
    in a 2007, poll of 2200 adults 43% of respondents were in favor of allowing students to use cell phone during tests.
    what is a point estimate for the proportion that favor allowing students to use cell phones during tests??

    find a 90% confidence for the true proportion of adults who favor allowing students to use their cell phones during tests


    i know how to do the confidence intervals with the formula but this im kinda lost help!
    The point estimate is obviously 43%.

    For the confidence interval, post #3 of this thread: http://www.mathhelpforum.com/math-he...-homework.html

    gives the solution to a similar question. Read it. Now, if you're still stuck, please indicate where.
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