Question

If someone has a dog, what is the probability that they also have a cat?

1/6
5/7
5/12
1/3

Answer 1

5/12

Explanation:

We are only looking at people who have a dog, which is 12

Now we need to determine if they have a cat

P( cat given that they have a dog)

= number of people with a cat/ they have a dog

= 5/ (5+7)

= 5/12