Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Probability of scoring a penalty

  1. Sep 3, 2003 #1
    The probability that I take a penalty and score is 2/5.

    If I take 10 penalties, what is the probability that I score less than 50% of them?
     
  2. jcsd
  3. Sep 3, 2003 #2

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    My gut instinct tells me the answer should be:

    (10!/4!6!)(3/5)6(2/5)4 + (10!/3!7!)(3/5)7(2/5)3 + (10!/2!8!)(3/5)8(2/5)2 + (10!/9!)(3/5)9 2/5 + (3/5)10

    but I've not checked it throughly
     
    Last edited: Sep 3, 2003
  4. Sep 3, 2003 #3

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    The above gives an answer of ~0.633 which seems about right to me.
     
  5. Sep 3, 2003 #4

    jcsd

    User Avatar
    Science Advisor
    Gold Member

    I've just done a quick check and the above is indeed the correct answer.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Probability of scoring a penalty
  1. Scoring a Quiz (Replies: 2)

  2. Putnam Scores? (Replies: 1)

  3. Score - Statistics (Replies: 0)

  4. Probability, The AND (Replies: 19)

Loading...