00:01
So we want the probability of at least one head and two flips of a coin.
00:04
So that's the probability.
00:06
So probably of at least one head is going to be the probability of one head plus the probability of two heads.
00:19
And if we draw up the sample space here, if i flip a coin twice, i have head head, head tail, tail head, tail, tail.
00:30
So these are the possible flips.
00:32
So the probability of one head is either tail head or tail head.
00:37
Head, that tailhead or head tails, that's a half.
00:40
And the probability of two heads is just one out of four.
00:45
And that's going to give us three -fourths of at least one head.
00:51
So now if 60 % chance of getting stuck in traffic on an individual day, what's the probability both days stuck? and that's just going to be the probability of day one stuck and probability of day two stuff.
01:17
These are independent of each other.
01:18
If i get stuck in traffic one day, it's not going to change the probability of it happening again the next day...