00:01
We have a given county, 50 % of the voters are democrat, 40 % are republicans, and 10 % are independents.
00:09
It says for this particular bond to get a part or whatever they're voting for, 60 % of the republicans voted for it, 30 % of the republicans, and 90 % of the independents voted.
00:25
So we want to know the following probabilities.
00:28
What's the probability of getting a democrat given that they voted for the bond? same thing for republicans, and then same thing for the independents.
00:42
So let's see the probability that they voted.
00:46
So to do that, we need to take these two values and multiply them together.
00:50
So we need to do that in decimal form, so i'm going to say .5 times .6, .4 times .3, .1 times .9.
01:01
So that's going to be, let's get those values, .3, this will be .12, this will be .09.
01:18
And we add those together, so that's going to be 15, 9, 24, .24.
01:24
So in each one of these, that's what we're going to put in the denominator, because we're only looking at those that voted for the proposition...