00:01
To work with probability, we need to think about how many times the desired event occurs.
00:05
And in this case, that would be having a defective computer, and compare that to the total number of outcomes observed.
00:11
In this case, that's looking at 1 ,200 computers.
00:15
So we know two pieces of information.
00:18
We know that we found nine defective computers.
00:22
And we know that 1 ,200 computers were checked.
00:27
So these two pieces of information will be used to find the probability that a defective computers.
00:31
Effective computer is found from this manufacturer.
00:34
So, we're going to start by setting up a ratio.
00:38
Our ratio is the nine defective computers compared to the 1 ,200 computers checked.
00:44
Now, this is going to give us the probability of having a defective computer.
00:47
I would like to look at this probability as a percentage, so i'm going to go ahead and change this to a ratio out of 100...