00:01
This question is talking about investigating the five major fires in the western desert during a recent summer.
00:08
And so it says what proportion of those fires were due to arson? and then how many total samples of size three can be selected from this population? and then list all possible samples of size three that can be selected from this population.
00:47
So to find the proportion due to arson, we would just have to see how many were caused by accidents and how many were caused by arson.
00:56
The number of samples of size 3, well, let's say we label the five fires as a, b, c, d, and e.
01:04
Well, we want to take any possible samples of size 3, so we could have a, b, c, we could have a, b, d, we could have a, b, d, we could have a, b, e...