Results 1 to 2 of 2

Math Help - statistics with choosing different color balls

  1. #1
    Newbie
    Joined
    Feb 2009
    Posts
    4

    statistics with choosing different color balls

    A bag contains 5 red and 3 white balls. Balls are drawn at random; WR means with replacement, WOR means without replacement. Fill in the four columns below.
    2 balls drawn 3 balls drawn
    WR WOR WR WOR
    (statistics) Pr(none are white)
    ans)
    (statistics) Pr(exactly one is white)
    ans)
    r (statistics)(exactly two are white)
    ans)
    r (statistics)(exactly three are white)
    ans)
    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 sandeep641 View Post
    A bag contains 5 red and 3 white balls. Balls are drawn at random; WR means with replacement, WOR means without replacement. Fill in the four columns below.
    2 balls drawn 3 balls drawn
    WR WOR WR WOR
    (statistics) Pr(none are white)
    ans)
    (statistics) Pr(exactly one is white)
    ans)
    r (statistics)(exactly two are white)
    ans)
    r (statistics)(exactly three are white)
    ans)
    One way of doing this would be to draw tree diagrams.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: October 7th 2011, 05:58 PM
  2. Choosing 5 balls from 10 black, 20 white, 40 red.
    Posted in the Statistics Forum
    Replies: 4
    Last Post: June 11th 2011, 01:36 PM
  3. a basket contains 5 red balls, 3 blue balls, 1 green balls
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: May 28th 2010, 03:39 AM
  4. Probability of choosing balls in an urn.
    Posted in the Statistics Forum
    Replies: 1
    Last Post: May 3rd 2008, 06:50 AM

Search Tags


/mathhelpforum @mathhelpforum