Sunday, January 31, 2010

POW Extra Credit

No POW due this week but I found this great problem in the book I'm reading right now- The Curious Incident of the Dog in the Night by Mark Haddon (don't go to the book b/c the answer is right there)

Monty Hall Problem
You are on a game show on television. On this game show the idea is to win a car as a prize. The game show host shows you three doors. He says that there is a car behind one of the doors and there are goats behind the other two doors. He asks you to pick a door. You pick a door but the door is not opened. Then the game show host opens one of the doors you didn't pick to show a goat (because he knows what is behind the doors). Then he says that you have one final chance to change your mind before the doors are opened and you get a car or a goat. So he asks you if you want to change your mind and pick the other unopened door instead. What should you do?

Why should you do what you do? Show/prove how you got your answer (describe in detail, write an equation or draw a table)

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