00:01
All right, so we're given that a certain university takes phone and registrations and calls for that come in at a rate of one every two minutes.
00:07
So let's write that down.
00:10
One call every two minutes.
00:14
All right.
00:15
So first off, we're asked, how many calls is this university you expected to get in one hour? well, an hour is 30 times two minutes.
00:24
So we're going to expect 30 calls in one hour.
00:31
And you can see that this proportion remains the same.
00:34
All right, now it's asking for the probability of getting three calls in five minutes.
00:39
So if we get one call in two minutes, what's the probability? how many calls do we expect in five minutes? and this becomes x equals 5 over two calls or 2 .5.
00:58
With that, let's set up our poisson distribution function...