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.
P(A) = 0,7 时 P(A^c) 。(答: 0,3 。)
P(A) = 0,7 时 P(A^c) 。(答: 0,3 。)
Natural Language
Math Input
Extended Keyboard