Results 1 to 2 of 2

Math Help - Easy Probability

  1. #1
    Newbie
    Joined
    Sep 2009
    Posts
    2

    Easy Probability

    The manager of a jewellery shop is interested in the likelihood of a lapping machine producing a defective item. Past experience has shown that the lapping machine is in good condition 86% of the time. When the machine is in good condition, it produces a defective item 5% of the time. When the machine is in bad condition, it produces a defective item 12% of the time.

    Calculate:
    a) the probability that the machine is in good condition and produces a defective item.
    b) The probability the machine produces a defective item
    c)Bad condition and produces defective item
    d)Bad condition and does not produce defective item
    e) good condition and does not produce defective item

    Thanks
    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 lk3456 View Post
    The manager of a jewellery shop is interested in the likelihood of a lapping machine producing a defective item. Past experience has shown that the lapping machine is in good condition 86% of the time. When the machine is in good condition, it produces a defective item 5% of the time. When the machine is in bad condition, it produces a defective item 12% of the time.

    Calculate:
    a) the probability that the machine is in good condition and produces a defective item.
    b) The probability the machine produces a defective item
    c)Bad condition and produces defective item
    d)Bad condition and does not produce defective item
    e) good condition and does not produce defective item

    Thanks
    Start by drawing a tree diagram. Can you do this?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. easy probability
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: November 17th 2010, 02:40 PM
  2. Easy Probability
    Posted in the Statistics Forum
    Replies: 4
    Last Post: September 10th 2010, 05:55 PM
  3. probability-easy?
    Posted in the Statistics Forum
    Replies: 1
    Last Post: March 31st 2010, 12:31 AM
  4. easy probability?
    Posted in the Statistics Forum
    Replies: 2
    Last Post: August 1st 2009, 08:50 AM
  5. Easy probability that is not so easy for me!
    Posted in the Statistics Forum
    Replies: 1
    Last Post: May 9th 2009, 07:03 AM

Search Tags


/mathhelpforum @mathhelpforum