Let's Make a Deal

Project #1445 on iSENSEProject.org

"Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?"

1. Make a prediction of your chances of winning by sticking with your original choice.

2. Go to the Stick or Switch link on your desktop and test out your prediction.

3. Enter your results with the contributor key in iSENSE project 1445.

4. Look at the saved visualization Percentage of Wins by Choice. Was your prediction correct?

5. Can you explain the results?

Source: National Library of Virtual Manipulatives

Source: Monty Hall Problem