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.

   Hint (a):

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

   Answer (a):

   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 $\frac { 1 } { 2 }$?

   Hint (b):

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

   More Help (b):

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