Results 1 to 2 of 2

Math Help - z-scores.

  1. #1
    Newbie
    Joined
    Oct 2010
    Posts
    1

    Red face z-scores.

    on a standard measure of hearing ability, the mean is 300 and the standard deviation is 20. Give the Z scores for persons who score (a) 340, (b) 310, and (c) 260. Give the raw scores for persons whose Z scores on this test are (d) 2.4, (e) 1.5, (f) 0, (g) -4.5.
    Last edited by mr fantastic; October 23rd 2010 at 01:35 PM. Reason: Re-titled.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor Unknown008's Avatar
    Joined
    May 2010
    From
    Mauritius
    Posts
    1,260
    The z values are given by:

    z = \dfrac{x - \mu}{\sigma}

    Look up the score for those values then.

    Do the reverse for the next parts.
    Last edited by Unknown008; October 23rd 2010 at 09:26 AM. Reason: typo
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: November 20th 2011, 09:35 PM
  2. Please help .. z scores ...
    Posted in the Statistics Forum
    Replies: 1
    Last Post: January 5th 2010, 11:30 AM
  3. z-scores?
    Posted in the Statistics Forum
    Replies: 3
    Last Post: December 29th 2009, 01:20 PM
  4. t scores
    Posted in the Statistics Forum
    Replies: 1
    Last Post: November 29th 2009, 09:17 PM
  5. Z-Scores.. tell me if im right please!
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: January 28th 2006, 02:52 PM

Search Tags


/mathhelpforum @mathhelpforum