plot sum Binomial[1000, k]*(1-e^(-(ln 2)*t))^k*(e^(-(ln 2)*t))^(1000-k) from k=490 to 510 from t=0.8 to 1.2

Uh oh! Wolfram|Alpha doesn't run without JavaScript.

Please enable JavaScript. If you don't know how, you can find instructionshere.Once you've done that, refresh this page to start using Wolfram|Alpha.