00:01
So before i get started here, i'll note that there is part of the problem that i'm simply not going to be able to do here because it does reference for each sample listed in part c, but there's no part c included.
00:13
But i can do part a.
00:16
So we're told that an investigation of all five major fires in a western desert during one of the recent summers found the following causes.
00:24
Arson, accident, accident, arson, accident.
00:27
We're asked to list all the possible signs.
00:30
Samples of size 3 that can be selected from the population and calculate the sample proportion p of the fires due to arson for each sample then we're asked to prepare the table that gives the sampling distribution p so we have that overall there were two cases of arson and three cases of accident so we could have three accidents we could have oh actually i'll be a little bit more careful here.
01:03
So we can have, actually i'll type this out, or arr and ac for arson versus accident.
01:12
So we could have arson, arson, arson, accident, arson, accident, accident, accident, we could have accident, accident, accident, accident, you could have arson, accident, accident, two different ways.
01:40
You could have accident, arson, accident, or accident, accident, arson.
01:52
Then, the proportion of fires due to arson for arson, two -thirds, two -thirds, two thirds, zero thirds, one third, one third, and one third.
02:15
Then we're asked to prepare the table that gives the sampling distribution p.
02:20
So let's see here.
02:22
One thing, i'm just going to make sure that i have all the different cases here...