00:01
In this problem we are given the probability of a missile which fails.
00:06
Let's represent that with the letter p as 0 .05.
00:12
And there is a missile guidance system which is having five number of failsafe components.
00:21
And we have to compute the probability that exactly two number of missiles will fail.
00:28
So we will consider x as the random variable which is representing the number of successes.
00:33
And the probability that exactly two will fail.
00:36
This is represented by the expression p when x is equal to 2.
00:40
And this is what we have to get.
00:42
So first we will consider this as binomial distribution where the number of independent trials that's 5.
00:48
Probability of the success.
00:50
Let's consider this as 0 .05.
00:52
So the probability of the failure.
00:54
We can get this by subtracting p from 1...