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.
Pr(X>30-0.5), normal distribution, mean=30, sd=7
Pr(X>30-0.5), normal distribution, mean=30, sd=7
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random