### Home > CC1MN > Chapter 1 Unit 3B > Lesson CC2: 1.2.3 > Problem1-81

1-81.

Your team is in charge of games at the CPM Amusement Park. One of the games involves a robotic arm that randomly grabs a stuffed animal out of a large bin. You need to set up the game so that the probability of a customer’s grabbing a teddy bear is exactly $\frac { 1 } { 2 }$

1. How would you set up the bin? Explain.

What fraction of the stuffed animals in the bin should be teddy bears?

If the probability of grabbing a teddy bear is $0.5$, then $0.5$ of the stuffed animals in the bin should be teddy bears.

2. What if you returned to check on the bin and found that there were 4 teddy bears left and 12 other animals? What could you add to or remove from the bin to return the probability of selecting a teddy bear to $\frac { 1 } { 2 }$?

How should the number of teddy bears compare to the number of other stuffed animals?

There are two possible answers. You could add teddy bears or remove other stuffed animals.