torekp comments on binomial variance problem - Less Wrong

5 Post author: nerfhammer 06 April 2012 10:59PM

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Comment author: torekp 08 April 2012 02:07:51PM *  2 points [-]

Not having memorized the formula for variance in binomial distributions, but intuiting that said principle was true, was my weaker reason for concluding B.

More saliently, the problem statement contains the gratuitous information that boys are a majority in program A. It's Kahneman and Tversky, for FSM's sake; therefore this information is used to mislead. Therefore, B.