* Take all families with two children
* Take a subset where at least one child is a boy born on Tuesday
* Take a subset of the previous subset where all children are boys
* The share of the 2nd subset relative to the 1st subset is around 48%
* Take all families with two children
* Take a subset where at least one child is a boy born on Tuesday
* Take a subset of the previous subset where all children are boys
* The share of the 2nd subset relative to the 1st subset is around 48%