1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Flipping a coin

  1. Oct 14, 2008 #1
    1. The problem statement, all variables and given/known data If I flip a fair coin n times, that is the probability that I get k heads?



    2. Relevant equations nCk: the combination in which order doesn't matter s.t one picks k from n.



    3. The attempt at a solution there are 2*2*2*2*2.....*2=2^n total outcomes. but the event specifies k ways of picking heads out of n flips. So, (nCk)/(2^(n)). Is this correct? Intuitively, I think its sound.
     
  2. jcsd
  3. Oct 14, 2008 #2

    Dick

    User Avatar
    Science Advisor
    Homework Helper

    Yes, it's quite sound.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Flipping a coin
  1. Coin flip Probability (Replies: 1)

  2. Coin flipping question (Replies: 3)

Loading...