00:01
Hi, i'm david and i'm here to help me answer your question.
00:04
Now let me bring up your question here.
00:07
In this question we'll discuss about the possum distribution.
00:11
Let me remind you that if we have the x followed by the possum with the mean equal to the lambda and then the probability of the x equal to the k equal to e or minus lambda, lambda power k, defined by k factorial.
00:33
Here we are given that the x will be equal to the number of the checkout counter so the number of the customer arrived and then it will follow by the poisson when the rate also equal to the mean equal to the two every five minutes so therefore in the question a we want to find the probability that none arrive in a 5 minute period.
01:15
So therefore i want to find the probability x equal to 0 here.
01:22
And then if we apply the formula here, we get lambda equal to 2.
01:27
So e to the power minus 2, 2 by 0, divided by 0 factorial.
01:33
Then we get equal to the e to the power of the minus 2.
01:39
And then we get equal to the 0 .1353.
01:44
And that's going to be the answer for the a...