00:01
Hi, i'm david and i'm here to have the answer your question.
00:04
Now let me bring your question here.
00:07
In the question here we want to discuss about the binomial distribution.
00:13
Let me remind you that if the x that followed by the binomial with the n and the p.
00:19
And then the probability of the x equal to k equal to n choose k b b b times 1 minus p b minus k.
00:27
And in this question here, we're given the rate under 92 .2 % for the medical students emitted through the special program.
00:38
B equal to the 0 .92.
00:42
And we're given the 11 students, so n equal to the 11.
00:48
Now if we call the x, it would equal to the number of the number of the student that graduated.
01:09
And then we see x it will follow by the binomial with the n will equal to 11, b it will equal to the 0 .9 -22.
01:20
And the question first one asked you to find the probability at least 10 of them calculated.
01:27
So it means that i want to find the probability the x greater equal to the 10.
01:32
It means that we will get the probability x can equal to the 10 and x can equal to the 11.
01:38
Now if we apply the formula here, we will plug it in to get the 11 choose 10 and then 0 .9 -22 power 10.
01:50
1 minus 0 .9 -2 -2 power 11 minus 10 will be 1.
01:55
That will be for the x equal to the 10.
01:58
Now for the x equal to 11, we have the 11 choose 11, 0 .9 -2 -power 11.
02:04
1 -1 -0 -9 -2 power 0.
02:08
And if we compute it, we have equal to.
02:17
So we have b equal to the 0 .9 to 2, 11.
02:24
This will be the 10.
02:26
So get equal to the 0 .3, 8, 8, 7 plus.
02:33
The next one will be the 11.
02:36
So get z plus 0 .4 .9, 2, 98.
02:42
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