Results 1 to 2 of 2

Math Help - z-score question

  1. #1
    Newbie
    Joined
    Aug 2009
    Posts
    7

    z-score question


    The picture is the answer to a problem with n=500, standard deviation of 0.0155 and mean of 0.14. Can any one teach me how to get P(Z>3.87) and where .0002 came from? Thanks in advance.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by loadup2 View Post

    The picture is the answer to a problem with n=500, standard deviation of 0.0155 and mean of 0.14. Can any one teach me how to get P(Z>3.87) and where .0002 came from? Thanks in advance.
    What were you doing in class when this was set/given? Or what was in the section of the book course where this occurred?

    My guess you were doing something about the normal distribution.

    If so you need to look up 3.87 in a table of the cumulative standard normal distribution and subtract that from 1, but that does not give the given answer.

    CB
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Z score question
    Posted in the Statistics Forum
    Replies: 4
    Last Post: November 9th 2011, 10:14 AM
  2. Probability/Z-Score Question
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 13th 2011, 07:02 PM
  3. z-score question
    Posted in the Statistics Forum
    Replies: 1
    Last Post: January 27th 2009, 05:36 PM
  4. [SOLVED] Quick z-score question
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: December 17th 2007, 03:50 PM
  5. [SOLVED] z-score question
    Posted in the Advanced Statistics Forum
    Replies: 0
    Last Post: October 26th 2007, 07:55 AM

Search Tags


/mathhelpforum @mathhelpforum