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Math Help - normal distribution, confidence interval

  1. #1
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    normal distribution, confidence interval

    stuck on a confidence interval question, any help welcome!
    an insurance company checks police records on a random sample of 582 automobile accidents and notes that a teenager was driving in the car in 91 of the accidents. create a 95% confidence interval for the percentage of all automobile accidents that involve teenage drivers.
    does this answer support the statement that 'in one of every five automobile accidents a teenager is the driver'?
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  2. #2
    Junior Member bebrave's Avatar
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    i am not sure maybe i have wrong..if answer is (0.12,0.18)i can send my solution way...
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  3. #3
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    that's sounds right! someone in my class gave me the answer but i don't have the solution so if you could please post/explain that would be very helpful!
    thanks again!
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  4. #4
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    Quote Originally Posted by lalalamaths View Post
    stuck on a confidence interval question, any help welcome!
    an insurance company checks police records on a random sample of 582 automobile accidents and notes that a teenager was driving in the car in 91 of the accidents. create a 95% confidence interval for the percentage of all automobile accidents that involve teenage drivers.
    does this answer support the statement that 'in one of every five automobile accidents a teenager is the driver'?
    Read post #3 here: http://www.mathhelpforum.com/math-he...-homework.html

    The question is identical to yours except for context and numbers.
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