# Thread: probability of having a dog

1. ## probability of having a dog

Suppose that 48% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?

I don't know how to approach this problem properly . Any suggestion would be appreciated!

2. Originally Posted by skorpiox
Suppose that 48% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?

I don't know how to approach this problem properly . Any suggestion would be appreciated!
Assuming independence, (0.48)(0.48).

(I've also assumed that the two people have not been selected at random from a dog show ....)

3. just for curiosity, what would be the probability that at least one of them has a dog?

4. Originally Posted by skorpiox
just for curiosity, what would be the probability that at least one of them has a dog?
Pr(at least one) = 1 - Pr(none) = 1 - (0.52)^2

5. thanks for your time Mr. fantastic

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### if 42% of people own a dog what is the probability of 2 people at random own a dog ?

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