00:01
An email filter is planned to separate valid emails from spam.
00:04
The word free occurs in 60 % of the, let me get a better pen, 60 % of the spam.
00:12
So i'm just kind of, shot me down some notes here.
00:16
And only 4 % of the valid.
00:20
So that would tell me that it does not occur in 40 % and 96 % of the valid.
00:27
So it does not occur.
00:29
So i'm going to put no free.
00:35
So now let's see what it says.
00:38
Also, 20 % of the messages are spam.
00:41
So we know that 20 % are spam.
00:47
So let's see what it says.
00:49
Determine the probabilities.
00:50
The message contains the word free.
00:53
Well, the message.
00:55
We know it's 60%.
00:56
How many contain the word free? let me highlight here.
01:00
60 % and 4%...