Question

An office has 30 computers. seventeen of the 30 are macintosh, and the remaining thirteen are windows. two computers are randomly selected without replacement. what is the probability of randomly selecting a macintosh given that the first computer selected was a windows machine?

Answer 1

Given the first was Windows, we're choosing the second from 17 macs and 12 Windows, so

`p = (17)/(17+12) = (17)/(29)`