View Pit Stop page for race #1736 by sarahsaleh — Ghost race
View profile for Sarah (sarahsaleh)
| Official speed | 47.61 wpm (93.51 seconds elapsed during race) |
|---|---|
| Race Start | May 16, 2019 12:14:49am UTC |
| Race Finish | May 16, 2019 12:16:23am UTC |
| Outcome | No win (5 of 5) |
| Accuracy | 96.0% |
| Points | 50.79 |
| Text | #3640570 (Length: 371 characters) Property (c) is known as countable additivity. It is not something that can be proved, but it is like an assumption or an axiom. In our experience, we have seen that operating as if the assumption is correct leads to useful and credible answers to many problems, so we accept it as a reasonable assumption. Not all probabilists agree that countable additivity is natural. |