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- Newsgroups: sci.math
- Path: sparky!uunet!comp.vuw.ac.nz!cc-server4.massey.ac.nz!TMoore@massey.ac.nz
- From: news@massey.ac.nz (USENET News System)
- Subject: Re: Marilyn Vos Savant's error?
- Message-ID: <1992Dec15.204731.4315@massey.ac.nz>
- Organization: Massey University
- References: <1gj5grINNk05@crcnis1.unl.edu> <1992Dec15.012403.28006@news.cs.brandeis.edu>
- Date: Tue, 15 Dec 92 20:47:31 GMT
- Lines: 15
-
- In article <1992Dec15.012403.28006@news.cs.brandeis.edu>, palais@binah.cc.brandeis.edu writes:
- >
- > You have a hat in which there are three pancakes. One is golden on
- > both sides, one is brown on both sides, and one is golden on one side
- > and brown on the other. You withdraw one pancake and see that one side
- > is brown. What is the probability that the other side is brown?
- >
- > I think she is correct (as usual) [2/3]. It is clear that the pulling out of
- > the hat involved choosing one of SIX sides to look at---all equally likely.
- If you don't believe it, test it experiment
- > experimentally a few dozen times and see if you come close to 66%
- > or 50%.
-
- These questions are all easy if you draw a tree.
-
-