00:01
Hello students we are going to write here a survey data is given with faculty and student and their silver black red and other data information is given so we are going to find probability values and third statement so basically if i write here for this for silver and if i write here here here we need to adjust our total values so this must be this must be partitioned and we are going to add this to make it more clear.
00:33
So this must be something like this.
00:34
This must be something like this.
00:38
We are going to write here clearly.
00:40
This must be extended.
00:44
So here we are going to write here total value.
00:47
So if i write here 40 plus 10 is 50 and 147 plus 20 is 167.
00:54
This must be 86 plus 35 is 121.
00:58
This is 25 plus 17 is 42.
01:01
And this total value is calculated as 380 as total.
01:06
This total value is calculated as 260 and we are going to write here.
01:11
This must be calculated as 120 and here we are going to write total.
01:17
So basically in the first case we are asked that if a person is chosen at random from all those surveyed, what is the probability that they would like a black car? so this must be probability of black car.
01:34
So this must be 167.
01:37
So we can see here black is 167.
01:39
Probable outcomes divided by total outcome, which is 380.
01:44
So if i write here for this, this must be equivalent to 0 .439.
01:52
So this is the probability in the first case...