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.
(normal distribution(23.2,9.1) > 29) - (normal distribution(23.2,9.1) > 35)
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random