Results 1 to 2 of 2

Math Help - Estimating, CI's and testing: When do you add √{ (N-n)/(N-1) } to the formula?

  1. #1
    Newbie
    Joined
    Feb 2013
    From
    Nederland
    Posts
    1

    Estimating, CI's and testing: When do you add √{ (N-n)/(N-1) } to the formula?

    Hello,

    I'm new to this forum. It seems helpful! I hope I can contribute some myself as well.

    But now, I'd be very glad if you could help me with my Statistics test preparation. The test will be about estimating, confidence intervals and hypothesis testing.


    My question is when to use what formula (see picture). I don't understand in what case I have to add in √{ (N-n)/(N-1) } to the formula, and when I don't, for estimating, CI's and testing.

    This is how it's stated on my formula paper:
    http://img15.imageshack.us/img15/7224/vraag1c.png

    Thanks in advance.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Joined
    Sep 2012
    From
    Australia
    Posts
    4,186
    Thanks
    772

    Re: Estimating, CI's and testing: When do you add √{ (N-n)/(N-1) } to the formula?

    Hey japzer7.

    This looks like the formulas for when you have a finite population.

    When the population is not infinite you take a limit when N -> infinity and the term will equal 1 which gives you the normal results.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 11
    Last Post: September 30th 2010, 04:40 PM
  2. Replies: 9
    Last Post: April 7th 2010, 12:12 AM
  3. Replies: 1
    Last Post: September 19th 2009, 06:03 AM
  4. Replies: 2
    Last Post: February 14th 2009, 01:12 PM
  5. Replies: 2
    Last Post: June 17th 2008, 02:04 PM

Search Tags


/mathhelpforum @mathhelpforum