0:00
All right.
00:01
So today we are looking at a binomial probability, and it kind of gives you that hint in the problem, based off of the likelihood of an enemy attack system detecting missile attack.
00:17
And we know that the probability of it detecting it is 70%.
00:21
So part a, it says what is the probability that one single detection system will detect an attack? so the probability.
00:24
So the probability of it says, what is the probability that one single detection system will detect an attack? so the probability? so the probability, of a success with only one detection.
00:35
And, okay, there's one system.
00:38
It has a 70 % chance of detecting it.
00:41
So that is 70 % likelihood that the one system would detect it.
00:47
So part b, what is the probability that at least one out of two detected? so with this one, we have our fixed number of trials...