00:01
So there was a study of 380 diabetics and non -diabetics.
00:05
The probability of picking someone at random and them having normal weight was 0 .31.
00:17
The probability of them having diabetes, if you just pick somebody at random, is 0 .39.
00:25
The probability of both, so we'll just put n for normal weight and diabetes, was not only 0 .09.
00:35
What is the probability that one or both will be diabetic or normal weight? okay, so this is complicated by having two individuals here.
00:49
So we want the probability either of them is diabetic or normal weight.
00:55
So the key to this is going to be the union.
00:58
I see there are a couple of symbols in your answers here.
01:01
This one means intersection.
01:05
It means you have to have one and the other, both.
01:09
This one means union, x or y or both...