To catch a terrorist - Can ethnic profiling work?

  1. Has anybody read the article by William H. Press concerning profiling: http://www.nr.com/whp/Significance_ToCatchATerrorist.pdf ?
    I m just wondering how can selection probability q_i be expressed as q_i=M*p_i because this gives for q_i bigger values than 1.
    My other concern was how is it shown that equation (5) is always smaller than equation (3)?
    I have to wonder if there are some assumptions made about p_i's and q_i's between the lines that I can not see...I would really much appreciatite help or any discussion about this interesting topic!
     
  2. jcsd
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