1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Need help in Mean, Probability & SD

  1. Apr 19, 2007 #1
    The placement data of a business school suggest that the percentage of students securing a job with a multinational during the years 1996, 1997 and 1998 are 20%, 30% and 40% respectively. One student is chosen at random from the graduating batch of each year. Let X be the number of students, out of the three so selected who had secured a job with a multinational. Calculate the following:

    a) The probability distribution of X
    b) The Mean of X
    c) The Standard Deviation of X
  2. jcsd
  3. Dec 16, 2011 #2
    Can anyone post answer of this?

  4. Dec 17, 2011 #3
    Are you asking for sumans? Can't sumans speak for him/herself? In any case, his/her question is over 4 years old and if this was a homework question, it should have been posted in that forum. When posting questions, the poster should show an attempt at a solution.
    Last edited: Dec 17, 2011
  5. Dec 17, 2011 #4


    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor
    2016 Award

    This thread is 4 years old.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Need help in Mean, Probability & SD
  1. Poisson / mean / sd (Replies: 2)