There is poison ivy where the author lives, which can grow in trees, in the sun or in the shade. As the author walks down a path with 18 total plants, 6 of which are poison ivy, some hiding and some not, there is a 33% probability that if he touches a plant, it will be poison ivy.
10. As I walk down the path and come
in contact with a plant, what is the
probability it will be poison ivy?
11. The 18 plants are my sample space.
The 6 poison ivy plants are a
subspace of the sample space and
touching them is my event. There are
6 out of 18 possibilities. Therefore….
6
18
=
1
3
= .33 = 33%
There is a 33% chance I will come into
contact with poison ivy, if I touch a
plant while walking down the path.
