probability

Ian Bleakney (bleekers@ousd.k12.ca.us)
Wed, 21 Apr 1999 20:01:25 -0600


Date: Wed, 21 Apr 1999 20:01:25 -0600
From: Ian Bleakney <bleekers@ousd.k12.ca.us>
To: pinhole@exploratorium.edu
Subject: probability

Hey pinholers, a probability question:

Let's pretend that you meet a person and she says that she has only
one sibling. What is the probability that her sibling is a boy? How
about a girl? I'm pretty sure that it is not 50:50....

(So, in real life, if you meet a woman with one sibling, is there
really a better chance of her having a brother than a sister?)

Stumped in Oakland

-- 
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Ian Bleakney Science Instructor Merritt Middle College High School Oakland, CA

Address: 1734 Allston Way Berkeley, CA 94703

The word 'bipartisan' usually means some larger-than-usual deception is being carried out.

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