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- Path: sparky!uunet!caen!sdd.hp.com!nobody
- From: regard@hpsdde.sdd.hp.com (Adrienne Regard)
- Newsgroups: sci.math
- Subject: Equation needed
- Date: 5 Nov 1992 11:58:31 -0800
- Organization: Hewlett Packard, San Diego Division
- Lines: 20
- Distribution: USA
- Message-ID: <1dbud7INNsli@hpsdde.sdd.hp.com>
- NNTP-Posting-Host: hpsdde.sdd.hp.com
-
-
- Hi,
-
- I apologise if this has been discussed here before -- I am not a regular
- reader of sci.math.
-
- I'm looking for a statistical equation that would express the probabilities
- in the game LETS MAKE A DEAL. I assume you've all seen it: Monty Hall
- gives a person a choice of three doors. One door contains a grand prize
- and the other two doors contain goats. The person picks a door (say, door
- 1). Then Monty opens one of the unpicked doors to reveal a goat (say, door
- 3). Then Monty offers the person the chance to switch from their door (1)
- to the remaining door (2). The person has a better chance of winning the
- grand prize if he switches, but I don't know how to write the equation to
- express the probabilities, and I've got a very excited friend who wants
- proof on this subject. Can anyone help me?
-
- e-mail to regard@hpsdde.sdd.hp.com or post to this net. Thanks,
-
- Adrienne Regard
-