00:01
Hi, i'm david and i'm here to help you answer your question.
00:04
Now let me pick up your question here.
00:07
In this question we discuss about the possum distribution and let me remind you that if we have the x followed by the possum with the rate lambda and then the proper painting the x equal to k, it will equal to the e to the power minus lambda, lambda power k over k factorial.
00:32
And also the mean of the x equal to the ranks on the x and equal to the x and equal to the lambda now in this question we're given that there are 200 typo in the 500 page manuscript so we have the 200 agree in the 500 pages therefore if we want to have only one page and then there will be the 200 over 500 equal to 2 out of 5 error in one page.
01:16
So if we call the x equal to the number of the error in one page and then x it will follow by the pawn song with the lambda equal to 2 over 5 error.
01:41
Per page.
01:44
Now in the part i am the question.
01:48
I want to find the probability that given the page contains no error.
01:54
It means that x will equal to 0 in this case.
01:59
And then it will apply the formula here, which you can equal to e to the power minus 2 out of 5, then 2 out of 5 power 0, or 0 factorial.
02:11
Then we do the calculation here...