Income tax returns
In a recent year, the Internal Revenue Service received 142,978,806 individual tax returns. Of these, 17,993,498 reported an adjusted gross income of at least $100,000, and 392,220 reported at least $1 million.
If you know that a randomly chosen return shows an income of $100,000 or more, what is the conditional probability that the income is at least $1 million?