Results 1 to 3 of 3

Math Help - Data Management - Probability Distributions question 2

  1. #1
    Junior Member
    Joined
    Sep 2008
    Posts
    25

    Data Management - Probability Distributions question 2

    The door prize at a dance includes 4 - $10 gift certs, 5 $20 certs and 3 $50 certs. 5 prizes are drawn at random, what is the prob. that none of the prizes is a $10 gift cert ?

    I dont remember a thing about this type of questions.

    I am trying my best and will edit the post with whatever i got =)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by Faisal2007 View Post
    The door prize at a dance includes 4 - $10 gift certs, 5 $20 certs and 3 $50 certs. 5 prizes are drawn at random, what is the prob. that none of the prizes is a $10 gift cert ?

    I dont remember a thing about this type of questions.

    I am trying my best and will edit the post with whatever i got =)
    There are a number of ways of solving this. Drawing a tree diagram is a good way.

    Another way leads to this answer: \frac{^8C_5 \cdot ^4C_0}{^{12}C_5}. Do you see where it comes from?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2008
    Posts
    25
    Quote Originally Posted by mr fantastic View Post
    There are a number of ways of solving this. Drawing a tree diagram is a good way.

    Another way leads to this answer: \frac{^8C_5 \cdot ^4C_0}{^{12}C_5}. Do you see where it comes from?
    Oh yes..>I see it now !!!

    Thanks alot for the jump start....

    Its the formula to find the prob. in a hyper geometric distribution.

    I couldnt figure out a way to use that formula with that question..

    Guess i am approaching questions the wrong way...

    Thanks alot again sir.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 0
    Last Post: December 11th 2011, 10:16 AM
  2. Replies: 0
    Last Post: March 27th 2009, 07:13 PM
  3. Data Management - Probability Distributions
    Posted in the Statistics Forum
    Replies: 2
    Last Post: January 4th 2009, 09:44 PM
  4. Data Management - Prob. Distributions
    Posted in the Statistics Forum
    Replies: 4
    Last Post: December 31st 2008, 05:01 PM
  5. Data Management HELP
    Posted in the Statistics Forum
    Replies: 1
    Last Post: January 6th 2008, 04:19 PM

Search Tags


/mathhelpforum @mathhelpforum