The probability of the latter is higher, much higher. And of course, the 2 events are independent, so you just look at the statistics of gender at birth, or for the age of your coworker.

The probability is 1/2 (or a 50% chance) of either "heads" or "tails". Statistics is the study of the collection, analysis, interpretation, presentation, and organization of data.

But as a data scientist, I hope the careless use of probability gets left by the wayside and is replaced by widespread education on its true meaning and appropriate usage. Steven Stern, Professor of ...