00:01
Hi, i'm david and i'm here to have you answer your question.
00:04
Now let me bring up your question here.
00:07
In this question we discuss about the binomial distribution.
00:11
Let me remind you that it will have the x followed by the binomial with the n and the p and the p.
00:18
And then the probability x equal to the k, it will equal to the n choose k, and then p power k 1 minus p power n minus k.
00:32
And here, if we read the question, we see that we have the probability under 50 % of prison barely become repeated offender.
00:43
So probability here equals 0 .5.
00:47
And n here, it will equal to the four pupils.
00:53
So let's also come soon.
00:56
And then on the far barely, so n equals to four here.
01:00
And then i want to denote the x equal to the number of the barrelies that repeat offender and then we see that x it will follow by the binomial with the n equal to 4 and the p equal to 0 .5 and here in the part i we have to find the probability for x0 .1234 and you did a good job we found the probability x to 0 and then the probability x to 4.
01:47
Now let me do the probability of x equals to 1.
01:52
If we use the formula here, and then we should get the 4 choose 1, and then we have the 0 .5 power 1 .1 minus 0 .5, 4 minus 1.
02:05
If we do the calculation, we should get the answer power of times 4 ,000 ,000 so get this one will equal to the 0 .25...