Problem 237. Half?

If you toss an even number (x) of coins, what is the probability (y) of 50% head and 50% tail?

Solve

Last solution submitted on Aug 06, 2019

Peter Wittenberg on 19 Dec 2012

binopdf(x/2,x,0.5) should yield the smallest solution. However, binopdf gets hung up on the input type. Does anyone know why?

J.R.! Menzinger on 18 Mar 2013

the function you try to use belongs to the Statistics Toolbox, on cody it is only allowed to use Matlab alone, without toolboxes.

Read the notes on the right side in this link:
http://www.mathworks.de/matlabcentral/about/cody/#contribute_problems