00:01
You have three jars containing marbles.
00:04
So jar 1 has 600 red and 400 white.
00:09
So in jar 1, the probability of red is 0 .6.
00:13
And the probability, excuse me, let's write that, probability of white is 0 .4.
00:20
In jar 2, there are 900 blue and 100 white.
00:24
So the probability of blue is 0 .9, and the probability of white is 0 .1.
00:30
And in jar 3, we have 10 green and 990 white.
00:37
So the probability of green is 0 .01, and the probability of white is 0 .99.
00:45
If you blindly select one marble from each jar, calculate the probability of obtaining the following.
00:52
So for red, green, and white, we're going to take 0 .6 times 0 .9 times 0 .01, for red, blue and green, excuse me.
01:04
And when we multiply those together, we're going to get .0054.
01:09
For white -white, white, it's 0 .4 times point 1 times 0 .99 for a probability of 0 .0396.
01:22
Red, green, and white is going to be 0 .6 times .01.
01:27
And in jar 2, that's the white that we're going to be using, so times point 1.
01:33
And that's going to be 0 .0 .006.
01:38
Our next one, i jumped the gun a little bit, is supposed to be red and two whites.
01:45
So red is 0 .6.
01:46
In jar 2 we're going to use white, which is 0 .1, and in jar 3 we're going to use white, which is 0 .99...