Results 1 to 3 of 3

Math Help - union probability

  1. #1
    Newbie
    Joined
    Sep 2008
    Posts
    2

    Angry union probability

    a certain city has a milk and newspaper home delivary services. it is estimated that 74% of the household order milk and 58% order newspapers. of those who order milk, 77% also order newspapers. what is the proportion of households

    question 1) order both milk and newspaper?

    question 2) order atleast one of the two?

    quetion 3) order neither milk nor newspaper?

    quetion 4) are the events ordering milk and newspapers independent? give reasons

    could some one help me as am new to probability but i needed to do this.

    i dont know how to start
    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 gyanboss View Post
    a certain city has a milk and newspaper home delivary services. it is estimated that 74% of the household order milk and 58% order newspapers. of those who order milk, 77% also order newspapers. what is the proportion of households

    question 1) order both milk and newspaper? Mr F says: It's easier to work in probabilities. Pr(M and N) = (0.74)(0.77) = .....

    question 2) order atleast one of the two? Mr F says: Pr(M or N) = Pr(M) + Pr(N) - Pr(M and N) = ....

    quetion 3) order neither milk nor newspaper? Mr F says: 1 - answer for question 2)

    quetion 4) are the events ordering milk and newspapers independent? give reasons Mr F says: Does Pr(M) Pr(N) = Pr(M and N) .....?

    could some one help me as am new to probability but i needed to do this.

    i dont know how to start
    ..
    Last edited by mr fantastic; September 3rd 2008 at 05:31 PM. Reason: Corrected (in blue) an obvious typo
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2008
    Posts
    2

    Smile

    thank you for the urgency and accuracy, that was helpful
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Union of Conditional probability
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: August 16th 2011, 01:25 PM
  2. Replies: 0
    Last Post: March 9th 2011, 04:44 PM
  3. conclude that the closure of a union is the union of the closures.
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: February 13th 2011, 06:50 PM
  4. Probability of the Union of 4 events
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: January 30th 2011, 04:15 PM
  5. Union of a set
    Posted in the Differential Geometry Forum
    Replies: 2
    Last Post: September 3rd 2009, 01:00 PM

Search Tags


/mathhelpforum @mathhelpforum