00:01
Hi, i'm david and i'm here to help you answer your question.
00:03
Now let me bring up your question here.
00:06
In the question here we are going to discuss about the binomial distribution.
00:10
Let me remind you that if the x that followed by the binomial with the n and the b, and then the probability of the x equal to k, equal to the n choose k, b power k times 1 minus b power n minus k.
00:28
In the question here we have the 25 % of the 1.
00:31
The potential customers who walk into the store make a purchase.
00:35
So we have the p equal to 025 and we have the n equal to the 25 customers.
00:41
Now it will define the x equal to the number of the working customers that might purchase.
00:59
And then we see that x will follow by the binomial with the n equal to the 25 and the p equals the 0 .25.
01:10
In the question a we need to find the probability that exactly 10, so x will equal to the 10, we'll make a purchase...