00:01
So in this problem, there are three different events.
00:05
There's an initial flip of a coin, which gives us either a head or a tail.
00:14
And if there's a head, then we flip this coin again, and again get either a head or a tail.
00:22
If there's a tail, we just stop there.
00:24
So we don't need to extend the tree there.
00:27
Up here, if we get a head the second time, we stop.
00:30
But if there's a tail, we're going to roll a die.
00:34
And we know there are six sides to a die.
00:38
So there are going to be six possible outcomes...