Results 1 to 2 of 2

Math Help - Probability test Question

  1. #1
    Newbie
    Joined
    May 2009
    Posts
    5

    Probability test Question

    Candidates for the graduate scheme of an oil major have to take two tests prior to interview, a psychometric test and an aptitude test. The results based on previous applicants show that P (Candidate passes psychometric test) = 0.8 and P(candidate passes aptitude test) = 0.3
    Assume that performance on one test is independent of the other.

    1. When a candidates applies for the post what is the probability he or she passes both tests?

    2. When a candidates applies for the post what is the probability he or she passes just one of the tests?

    3. Ambitious, but incompetent candidate applies for the post repeatedly. What is the probability that he or she passes the psychometric test after 5 attempts.

    Please me out on this one with working out.

    Thank You
    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 JJC85 View Post
    Candidates for the graduate scheme of an oil major have to take two tests prior to interview, a psychometric test and an aptitude test. The results based on previous applicants show that P (Candidate passes psychometric test) = 0.8 and P(candidate passes aptitude test) = 0.3
    Assume that performance on one test is independent of the other.

    1. When a candidates applies for the post what is the probability he or she passes both tests?

    2. When a candidates applies for the post what is the probability he or she passes just one of the tests?

    3. Ambitious, but incompetent candidate applies for the post repeatedly. What is the probability that he or she passes the psychometric test after 5 attempts.

    Please me out on this one with working out.

    Thank You
    You need to review the basic probability formulae. Your job is to explain the following:

    1. (0.8)(0.3) = ....

    2. (0.8)(0.7) + (0.2)(0.3) = ....

    3. (0.2)^4 (0.8) = ....
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: May 21st 2010, 09:56 AM
  2. Probability test question
    Posted in the Statistics Forum
    Replies: 2
    Last Post: February 9th 2010, 12:15 PM
  3. Probability of HIV test
    Posted in the Statistics Forum
    Replies: 1
    Last Post: September 17th 2009, 03:04 AM
  4. Replies: 2
    Last Post: August 27th 2009, 06:54 PM
  5. Probability Test
    Posted in the Statistics Forum
    Replies: 10
    Last Post: April 25th 2008, 12:01 PM

Search Tags


/mathhelpforum @mathhelpforum