00:01
Now here in this question, you look at the blood types of a randomly chosen person in the united states, right? you have four blood types, right? you have o, have a, you have b, you also have a, b, right? now, the probability of random choice person to have all blood type has probability 31%, right? so 0 .31.
00:20
While to have a blood type is 0 .34, to have b blood type is 0 .12.
00:27
The first question is, what is the what is the probability for this random relationship person to have ab product type? well, that is of course given by 1 minus 0 .31 minus 0 .34 minus 0 .12, right? and this is of course given by, you put them together, you'll find that 0 .64 and 0 .707, right? so you get actually 0 .23, right? so that is the probability for a randomly chosen person to have this a, b, blood type.
01:05
Now, suppose maria has had b blood, okay? so the second question, b, and this is the first question...