Results 1 to 3 of 3

Math Help - Problem on normal/gaussian distribution sampling

  1. #1
    Newbie
    Joined
    Jul 2010
    Posts
    5

    Problem on normal/gaussian distribution sampling

    Find the probability of picking up four consecutive individuals of weight greater than 70kg from a population that is normally distributed with mean weight at 60 kg and standard deviation of 5 kg ?

    I solved this by calculating Z = (70 - 60 )/ 5
    (from formual z = (X- mean)/std dev )

    hence z = 2

    then taking the area from standard table, the area to the right of 2.

    this is probability of picking up person of weight greater than wt of 70kg

    but how to make it applicable for picking up four consecutive individuals ?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    Quote Originally Posted by gkraju View Post
    but how to make it applicable for picking up four consecutive individuals ?
    More information is required here, what is the dist of X where X = probability of picking up consecutive individuals?

    Then find P(X=4) where p= P(Z>2)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor matheagle's Avatar
    Joined
    Feb 2009
    Posts
    2,763
    Thanks
    5
    p^4 this is binomial whre you want 4 successes in 4 trials,
    the chance of one success is that p
    AND these trials need to be independent
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Gaussian (Normal) Distribution (LEVEL 2 CALCULUS)
    Posted in the Advanced Statistics Forum
    Replies: 9
    Last Post: April 24th 2011, 06:23 AM
  2. Replies: 7
    Last Post: July 4th 2010, 08:46 AM
  3. Normal and Sampling Distribution
    Posted in the Statistics Forum
    Replies: 0
    Last Post: September 11th 2009, 07:01 PM
  4. Normal and Sampling Distribution #2
    Posted in the Statistics Forum
    Replies: 0
    Last Post: September 11th 2009, 07:01 PM
  5. Replies: 6
    Last Post: January 16th 2009, 05:15 AM

Search Tags


/mathhelpforum @mathhelpforum