00:01
In this question, we're given a survey of 690 heart attack survival was done.
00:07
I'm going to let c denote the cell survivors who had high cholesterol.
00:12
S denote the third survivors who were smokers.
00:16
B denoted the third survivors who had high blood pressure.
00:21
So i'm going to draw the venn diagram as i read out the information.
00:28
So this is c.
00:31
This is s.
00:34
And this will be b.
00:39
We have 62 had only high cholesterol.
00:43
So we're talking about the set of people in this region only.
00:49
So that is 62.
00:53
36 i had only smoking.
00:57
So we're talking about this region over here.
01:02
So that is 36.
01:07
93 had only high blood pressure.
01:10
So we're talking about this portion here.
01:13
That's 93.
01:19
370 had high cholesterol.
01:21
So that is number of people in set c.
01:23
Is 370.
01:26
I'm going to use this information later.
01:30
159 had hybrid pressure and cholesterol but didn't smoke.
01:34
So only had hybrid pressure, so b and cholesterol, so b and c, but did not smoke.
01:41
So we're talking about this area here, and that is 159.
01:49
And we had 23 who smoked and had high cholesterol.
01:53
So smoke and high cholesterol, but did not have hybrid pressure.
01:55
We're talking about this area here, and that's 23.
02:01
585 had at least one respecter.
02:03
So we're talking about number of people who had either high cholesterol, that's set c, or.
02:10
So n is times, set notation is interset, or is plus set notation is union.
02:15
So all, that's union.
02:18
He is a smoker, that's set as, or, so union, he has high blood pressure.
02:24
So we're talking about the union of these three set is 585.
02:31
I'm going to use this information later.
02:33
So now i'm ready to use the information for the number of people inside 6 .370.
02:39
That is this entire set inside here...