00:01
All right, here on this problem, we are dealing with a pulsan process.
00:04
And we are told that support requests arrive at a rate of one every 30 minutes.
00:10
All right, i'm going to use this software called stackcrunch here, just to make the calculations a little easier for us.
00:16
On part a, what is the expected number of requests in an hour? well, if it's one every 30 minutes, that means you're going to get about two per hour.
00:25
So on a, we should just have two.
00:28
Now, on b, we want to find the probability that the number of requests in an hour is between two and five.
00:32
For inclusive.
00:35
This is where i'm going to go to a poson calculator.
00:37
You just find it on google if you need to.
00:39
You can do it by hand.
00:42
It's not too difficult to do by hand, but it just makes it easier, i think, if i do it on stat cruncher.
00:48
So i made my mean two, and we want the probability is between two and four.
00:54
Between two and four gives us 0 .5413.
00:58
So that's the probability it's between 2 and 4 .5413.
01:04
Now, and see, we want to find the expect.
01:05
The number of requests in a 10 -hour workday.
01:09
Well, we just said that there are two per hour...