Results 1 to 2 of 2

Math Help - Probability in difference of proportions

  1. #1
    Newbie
    Joined
    Oct 2008
    Posts
    11

    Probability in difference of proportions

    Two communities were surveyed in NS for Sunday shopping. In community A, 80% of the residents were in favour and in another community (community B) 65% were in favour of permitting Sunday shopping hours. What is the probability of getting a difference in proportions between community A and B of greater than 20%? (use alpha = 0.05).

    I've never seen anything like this before... help?! Thanks!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Flow Master
    mr fantastic's Avatar
    Joined
    Dec 2007
    From
    Zeitgeist
    Posts
    16,948
    Thanks
    5
    Quote Originally Posted by outatime1.21 View Post
    Two communities were surveyed in NS for Sunday shopping. In community A, 80% of the residents were in favour and in another community (community B) 65% were in favour of permitting Sunday shopping hours. What is the probability of getting a difference in proportions between community A and B of greater than 20%? (use alpha = 0.05).

    I've never seen anything like this before... help?! Thanks!
    I assume the populations of each community are 'large' ....

    Read this thread: http://www.mathhelpforum.com/math-he...mple-help.html
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: April 23rd 2011, 03:02 PM
  2. Probability and proportions?
    Posted in the Statistics Forum
    Replies: 4
    Last Post: April 8th 2010, 08:14 PM
  3. probability of firemen, using proportions.
    Posted in the Statistics Forum
    Replies: 1
    Last Post: October 26th 2009, 04:15 AM
  4. Proportions
    Posted in the Advanced Math Topics Forum
    Replies: 5
    Last Post: May 9th 2009, 10:51 AM
  5. Proportions
    Posted in the Algebra Forum
    Replies: 2
    Last Post: January 27th 2009, 07:32 AM

Search Tags


/mathhelpforum @mathhelpforum