Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
(45/(45+26)-0.5)/sqrt(((45/(45+26))*(26/(45+26)))/(45+26))
(45/(45+26)-0.5)/sqrt(((45/(45+26))*(26/(45+26)))/(45+26))
Natural Language
Math Input
Extended Keyboard
