00:01
Hi, i'm david and i'm here to help you answer your question.
00:04
Now let me bring up your question here.
00:07
In this question we're going to discuss about the binomial distribution.
00:11
Let me remind you that the if we have the x followed by the binomial with the n and the p and then the probability of the x equal to k, it will equal to the n choose k, b power k, times 1 minus b b, k and here in this question we have 80 % of the case that the customer problem can be reserved on in the same day.
00:41
So be equal to the 0 .8.
00:44
Now we have a totally 14 cases and then if we call the x equal to the number of the cases that can be reserved in the same day.
01:03
So we'll be today here and then we see x it will follow by the polynomial with the n equal to the 14 b equal to the 0 .8.
01:19
Now the question a here asks us to find the probability that exactly 6 problem can be resolved today so means that probability x equal to the 6.
01:30
Now it will apply the formula for the polynomial we will have the 14 to 6 and then 0.
01:39
1 .0 .0 .8 could be 0 .2 power 14 minus 6 will be 8...