00:01
So to solve this one, i'm going to recommend we use a tree diagram.
00:06
So we have an insurance company classifying drivers as low, medium, or high risk.
00:29
And of those, 60 % are low risk.
00:32
So i'm going to put a 0 .60 to represent 60%, 30 % are medium risk, and 10 % are high risk.
00:45
From there, after a study, the company finds that during a one -year period, 1 % of the low -risk drivers had an accident.
00:55
So we're going to say, having an accident or no accident.
01:09
So 1 % had an accident, so that meant 99 % did not have an accident.
01:15
And then we're going to do the same thing for the medium risk.
01:18
We're going to talk about them having an accident or not having an accident.
01:31
And of the medium risk, 5 % of those drivers had an accident, which meant 95 % did not have an accident.
01:42
And then we're going to do the same thing for the high risk drivers.
01:46
We have an accident and no accident...