Results 1 to 3 of 3

Thread: Sample Spaces And Probability

  1. #1
    Junior Member
    Joined
    Apr 2016
    From
    Australia
    Posts
    57
    Thanks
    3

    Sample Spaces And Probability

    Hi!

    "A computer manufacturer notes that 5% of their computers are returned owing to faulty disk drives, 2% are returned owing to faulty keyboards, and 0.3% are returned because both disk drives and keyboards are faulty. Find the probability that the next computers manufactured will be returned with:
    a) a faulty disk drive or a faulty keyboard
    b) a faulty disk drive and a faulty keyboard

    Any help much appreciated!
    Thanks in advance :-)
    ~Ebony Jade
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    12,834
    Thanks
    1930

    Re: Sample Spaces And Probability

    You can solve this with a Venn Diagram or a Karnaugh Map...
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor

    Joined
    Aug 2006
    Posts
    21,267
    Thanks
    2641
    Awards
    1

    Re: Sample Spaces And Probability

    Quote Originally Posted by EbonyJade View Post
    "A computer manufacturer notes that 5% of their computers are returned owing to faulty disk drives, 2% are returned owing to faulty keyboards, and 0.3% are returned because both disk drives and keyboards are faulty. Find the probability that the next computers manufactured will be returned with:
    a) a faulty disk drive or a faulty keyboard
    b) a faulty disk drive and a faulty keyboard
    $\mathscr{P}(K\cup D)=\mathscr{P})+\mathscr{P}( D)-\mathscr{P}(K\cap D)$

    Now review the question. Isn't the answer to b) given the statement of the question?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. [SOLVED] Question about sample spaces and events
    Posted in the Statistics Forum
    Replies: 6
    Last Post: Jul 12th 2011, 08:40 PM
  2. Sample spaces.
    Posted in the Statistics Forum
    Replies: 1
    Last Post: Mar 3rd 2011, 12:28 PM
  3. Sample spaces
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: Sep 8th 2009, 08:26 PM
  4. Sample spaces
    Posted in the Statistics Forum
    Replies: 0
    Last Post: Sep 8th 2009, 06:01 PM
  5. Sample Spaces and Events
    Posted in the Statistics Forum
    Replies: 2
    Last Post: Apr 3rd 2009, 03:19 AM

/mathhelpforum @mathhelpforum