1. Limited time only! Sign up for a free 30min personal 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!

Binomial probability

  1. Oct 15, 2011 #1
    In sending 10 characters, a character error occurs independently with probability 1/10. What is the probability that in a 10-character message, less than 3 errors occur?

    I am using the binomial formula (n choose k)pk(1-p)n-k where n = 10, p = 1/10, and k is the number of errors. Since the problem statement says less than 3 errors occur, I adding up the values for k = 0, 1, 2

    (10 choose 0)(1/10)0(1-1/10)10 + (10 choose 1)(1/10)1(1-1/10)9 + (10 choose 2)(1/10)2(1-1/10)8, but i am wondering if I am doing this correctly? should i be adding or multiplying?
     
  2. jcsd
  3. Oct 15, 2011 #2

    Ray Vickson

    User Avatar
    Science Advisor
    Homework Helper

    You have written everything correctly, so if you have not made any arithmetical errors your answer should be correct.

    RGV
     
  4. Oct 15, 2011 #3
    thanks
     
    Last edited: Oct 15, 2011
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Binomial probability
  1. Binomial Probability (Replies: 6)

Loading...