The probability that a house will develop a leak is 5%. If 20 house holds are randomly selected, what is the mean number if houses that developed leaks?

Answer 1

.05 *20 = ?

Answer 2

I thought that was it. It just seemed to easy. Thanks

Answer 3

% of the community favored having a pool in the new park. If citizens are chosen, find the probability that exactly of them favor the pool.