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Math Help - probably guilty

  1. #1
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    probably guilty

    I need your help with another problem... I would really appreciate it.

    During a circumstancial process, n evidences with probatory value of 2% each are considered.
    1) evaluate the probability P1 of guilty on the base of n=1 evidence
    2) evaluate P10 of guiltyness on the base of n=10 evidences
    3) calculate the minimal number N of evidences such that the probability of guiltyness exceeds 90%.

    sorry for my bad English too...

    Thanks a lot.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by 0123 View Post
    I need your help with another problem... I would really appreciate it.

    During a circumstancial process, n evidences with probatory value of 2% each are considered.
    1) evaluate the probability P1 of guilty on the base of n=1 evidence
    2) evaluate P10 of guiltyness on the base of n=10 evidences
    3) calculate the minimal number N of evidences such that the probability of guiltyness exceeds 90%.

    sorry for my bad English too...

    Thanks a lot.
    I don't like this question, it is very close to being a prosecuters falacy. It also
    seems to be making an unstated assumption that the "evidences" are independent.

    RonL
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  3. #3
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    Quote Originally Posted by CaptainBlack View Post
    I don't like this question, it is very close to being a prosecuters falacy. It also
    seems to be making an unstated assumption that the "evidences" are independent.

    RonL
    I simply translated the excercice I have been given but made no correction, just translated(in a perhaps bad way but..) what's wrong?
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