- #1
mpatryluk
- 46
- 0
Assuming that an event has 80% chance of occurrence and 20% of not occurring per "round", what is the formula to calculate the likelihood that it will occur at least n times assuming that there are x rounds?
i.e.
If you flip a coin 3 times, what are the chances that at least 2 times will turn up heads?
This example would be simple enough to map out all of the occurrences and find out which proportion meet those criteria, but the examples i will need to work with are too complex to do so.
I tried to find the formula online but didnt know the name and couldn't describe it in such a way that a google search yielded results.
Thanks!
i.e.
If you flip a coin 3 times, what are the chances that at least 2 times will turn up heads?
This example would be simple enough to map out all of the occurrences and find out which proportion meet those criteria, but the examples i will need to work with are too complex to do so.
I tried to find the formula online but didnt know the name and couldn't describe it in such a way that a google search yielded results.
Thanks!