00:01
And this problem, we are given a two -way table that we are going to be calculating probabilities on.
00:06
And we have two variables, gender and breakfast yes or no.
00:11
So the first part is what is the probability that someone eats breakfast? so if we look at that, we have a total of 300 breakfast eaters out of 595.
00:23
So 300 out of 595.
00:25
If we're asked to put it in decimal form, that would be 0 .504.
00:30
Little bit more than half eat breakfast so for number two what is the probability that someone in our group is female we have a total of 275 female and that's out of the total 595 so in decimal form that comes out to be 0 .462 the probability that they eat breakfast and female so breakfast and female so breakfast and female that is the 110 out of the 595.
01:08
Okay, and the upside down u there stands for intersection, which is the symbol for and when doing probability.
01:16
And that comes out to be 0 .185.
01:21
Number four, the probability of no breakfast.
01:26
Sometimes they'll use a little squiggle line to mean no or compliment, no breakfast and mail.
01:34
So no breakfast male, that is 130 out of 595, which is 0 .218.
01:44
Number five, it's kind of the same thing.
01:46
You kind of get repetitive here...