RE: Unfair Coin Flip
September 29, 2017 at 12:15 pm
(This post was last modified: September 29, 2017 at 12:19 pm by Edwardo Piet.)
(September 29, 2017 at 11:57 am)Tiberius Wrote: Suppose you have a coin, and you suspect it is unfair (i.e. it lands on one side more often than the other). You don't know which side it lands on more, and for sake of argument assume you can't find out.
How can you simulate a fair coin flip using this coin only? By "fair" I mean that you should get a "heads" result exactly 50% of the time, and a "tails" result exactly 50% of the time.
Oh fill in all the indentations with cement and then write "tails" on one end and "heads" on the other should work.
(September 29, 2017 at 12:15 pm)Tiberius Wrote: Increasing the sample size gets you closer to the actual value but you never touch it.
Oh so we'd have to be 100% accurate too.
If it truly is an unfair coin and you have to use that coin and one side is not 50% and there is no way you're allowed to modify the coin and you have to flip it the normal way and it's not a trick question... then it's not possible.
