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Your team is in charge of games at the 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 1/2


a. how would you set up the bin? Explain.


B. What if you returned to check on the bin and found that there are 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 1/2?

Respuesta :

Answer:

a. I would put 20 stuffed animals in the bin, out of which 10 would be teddy bears.

So that the probability is 10/20 = 1/2

b. I could remove 8 other animals from 12 to have 4. So that the total number of stuffed animals is 8. 4/8 = 1/2

Step-by-step explanation:

a. Probability =

number of required outcomes / number of possible outcomes

If in the bin there are 10 teddy bears out of 20 stuffed animals,

Then the probability of picking a teddy bear = 10/20 = 1/2.

b. If on returning, there are 4 teddy bears and 12 other animals, I could simply remove 8 of the other animals to have 4 other animals and a total of 8 stuffed animals.

Probability = 4/8 = 1/2

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