Biological Clock Odds

[Nemmy]

Let's say that there's a contest with ten people. The goal is to count to sixty seconds in your head and be as accurate as possible. For example, a stopwatch would be clicked, and you would have to count sixty seconds in your head, then say "stop" when you thought 60 seconds was up. If each time was rounded to the nearest tenth, and you had to get between fifty and seventy seconds on the stopwatch to qualify, what would be the odds of landing exactly on sixty seconds?