Curious about people's recycling behaviors, Sandra put on some gloves and sifted through some recycling and trash bins. She kept count of the plastic type of each bottle and which bottles were properly dispensed.

Question

Curious about people's recycling behaviors, Sandra put on some gloves and sifted through some recycling and trash bins. She kept count of the plastic type of each bottle and which bottles were properly dispensed.

Correctly Placed Incorrectly Placed
Plastic #2 8 5
Plastic #4 5 2
What is the probability that a randomly selected bottle is correctly placed AND is a

Plastic #4 bottle?

Responses

58
5
8
5 eighths - incorrect

1320
13
20
13 over 20 - no response given

720
7
20
7 over 20 - no response given

14

Answer 1

The correct answer is 5 out of 13, or 5/13. This is because there are 5 bottles that are both correctly placed and are plastic #4 out of a total of 13 plastic #4 bottles.