On: Think you understand Monty Hall? Try the Tuesday b...

[vjk2005]

"If you surveyed all such families, you would find that roughly 13/27 of them have two boys." roughly 13/27? How rough are we talking, maybe it's roughly 13/26 instead.

[hexagonc → vjk2005]

The degree of "roughness" depends on the number of families surveyed. The more there are the closer to 13/27 you'll get.