Results 1 to 3 of 3

Math Help - find the following probability

  1. #1
    Senior Member
    Joined
    Jan 2010
    Posts
    273

    find the following probability

    A train of n wagons transports hazardous materials. Each wagon, and independently
    from the others, has a probability p to be defective. Prior to the trainís departure all
    wagons are examined by two inspectors who do not exchange their inspectionís results during the control. We assume that each inspector will detect a default on a given wagon (if any) with probability r. One default is enough to delay the trainís departure(for repair). Compute the following probabilities.

    that the trainís departure will be delayed?

    do I use the conditional prob formula here, P(A|B) where B is the prob that the inspector will find a default, and A is the train will be delayed?
    but how do I find the prob of A and B?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor harish21's Avatar
    Joined
    Feb 2010
    From
    Dirty South
    Posts
    1,036
    Thanks
    10
    Quote Originally Posted by wopashui View Post
    A train of n wagons transports hazardous materials. Each wagon, and independently
    from the others, has a probability p to be defective. Prior to the train’s departure all
    wagons are examined by two inspectors who do not exchange their inspection’s results during the control. We assume that each inspector will detect a default on a given wagon (if any) with probability r. One default is enough to delay the train’s departure(for repair). Compute the following probabilities.

    that the train’s departure will be delayed?

    do I use the conditional prob formula here, P(A|B) where B is the prob that the inspector will find a default, and A is the train will be delayed?
    but how do I find the prob of A and B?



    you should have checked a few threads before posting this.. Someone has already asked the same question just before you did..even his/her title says train containing hazardous material!!

    Here's the link
    Last edited by harish21; October 11th 2010 at 10:41 PM.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by harish21 View Post
    you should have checked a few threads before posting this.. Someone has already asked the same question just before you did..even his/her title says train containing hazardous material!!

    Here's the link
    Therefore: Thread closed.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. find the probability that Y1 + Y2 is less than 1
    Posted in the Advanced Statistics Forum
    Replies: 4
    Last Post: December 1st 2011, 01:42 PM
  2. Find the indicated probability?
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 5th 2009, 09:35 PM
  3. Find the indicated probability?
    Posted in the Statistics Forum
    Replies: 7
    Last Post: June 8th 2009, 06:49 PM
  4. Find the probability that Y<= 1?
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: May 28th 2009, 11:18 PM
  5. find the probability
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: April 16th 2007, 07:49 PM

Search Tags


/mathhelpforum @mathhelpforum