Thread: 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!

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 ....)

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

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

thanks for your time Mr. fantastic