00:01
We have a table here of data, and we want the probability that a randomly selected person is female or received a masters.
00:14
Okay, so first of all, what happens if someone is both, a female with a masters? and we're going to allow that, which means we're going to say we're looking for the union of female union masters.
00:34
So a union is one or the other or both, and we will allow that.
00:40
If your teacher has indicated at all, but they don't like when you include and in these questions, obviously don't, but typically it's accepted.
00:52
So how do we work this out? well, we're going to add up all of the groups that meet this criteria, and then we're going to divide it by the total number of people.
01:01
So we're going to have this fraction with the total.
01:05
People and we'll want to meet our criteria.
01:14
So the total number is 3 .560, which we're told.
01:19
So we're picking a randomly selected person from a group of 3 ,560 ,000, and we want to know how many of them meet the criteria.
01:28
So we're told that 2 ,139 are female.
01:35
We're also told that 732 have a masters, but if we were to just add those two numbers up, we'd be double counting the ones who are both...