Originally Posted by mathman
Originally Posted by Milwroad
I believe I was correct. I wrote down all the possibilities. This is a well known formula for getting r successes in N independent trials with probability of success p.

See https://www3.nd.edu/~rwilliam/stats1/x13.pdf


Almost. Your probabilities don't sum to 1 since you left out the event of zero roosters (heads).

Originally Posted by mathman
Originally Posted by Milwroad
I believe I was correct. I wrote down all the possibilities. This is a well known formula for getting r successes in N independent trials with probability of success p.

See https://www3.nd.edu/~rwilliam/stats1/x13.pdf


Almost. Your probabilities don't sum to 1 since you left out the event of zero roosters (heads).

Ah yes, you are correct! I left that one out.

The difference between genius and stupidity is that genius has its
limits.- Albert Einstein