00:01
In this problem it is said that the probability of winning something on a single play at a slot machine is 0 .13.
00:07
We need to determine the probability of winning at least once after five plays on the slot machine.
00:13
So let us consider w to be the event of winning a single play.
00:18
Then the probability of this event w is 0 .13 according to the question.
00:23
From this we can determine the probability of w complement, the probability of not winning.
00:27
Using the complement rule of probability this is 1 minus p of w.
00:31
That is 1 minus 0 .13 which is 0 .87.
00:35
Now we have been asked to determine the probability of winning at least once.
00:40
So the probability of getting at least one win.
00:43
Now using the complement rule of probability this is 1 minus the probability of the complementary event.
00:48
And the complementary event of at least one win is getting no wins.
00:53
So the first play we do not get a win and for the second play we do not get a win...