Results 1 to 4 of 4

Math Help - hi, this is my firt year of college and i need help with my statistics homework :(

  1. #1
    Newbie
    Joined
    Oct 2013
    From
    Oklahoma
    Posts
    3

    Unhappy hi, this is my firt year of college and i need help with my statistics homework :(

    Here's the question, I just need help on how to solve it because I have tried and im always wrong :/...

    Use technology to find the per capita consumption that corresponds to a cumulative area of 0.75 in a normal distribution with a mean of 18.7 and a standard deviation of 4.1

    the 75th percentile of annual consumption is ______.

    please and thank you!!!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Oct 2012
    From
    Ireland
    Posts
    504
    Thanks
    138

    Re: hi, this is my firt year of college and i need help with my statistics homework :

    Have you been taught to use tables to find out how many standard deviations the 75th percentile is above the mean?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Oct 2013
    From
    Oklahoma
    Posts
    3

    Re: hi, this is my firt year of college and i need help with my statistics homework :

    yes, the z-table right?
    (or the standard normal table)
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Newbie
    Joined
    Oct 2013
    From
    Oklahoma
    Posts
    3

    Re: hi, this is my firt year of college and i need help with my statistics homework :

    oh that's not what you said, and no, I have not been taught the tables for the percentiles
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: May 24th 2012, 03:41 PM
  2. First-Year Statistics Textbook
    Posted in the Statistics Forum
    Replies: 2
    Last Post: June 12th 2009, 08:55 AM
  3. Year 9 maths homework extension
    Posted in the Algebra Forum
    Replies: 14
    Last Post: February 2nd 2009, 09:37 AM
  4. Statistics - College Level - Again!
    Posted in the Advanced Statistics Forum
    Replies: 2
    Last Post: May 31st 2008, 06:06 AM
  5. Statistics - College Level
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: May 29th 2008, 11:23 PM

Search Tags


/mathhelpforum @mathhelpforum