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Homework Help: Prob. for Difference of mean, single finite pop.

  1. Mar 29, 2012 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations


    3. The attempt at a solution
    Last edited: Mar 29, 2012
  2. jcsd
  3. Mar 29, 2012 #2
    not entirely sure what to do here, i mean i've gotten the Variance for each, 78.125 & 50, and then... I'm confused because it's coming from one population, not two. hmmf.
  4. Mar 29, 2012 #3
    A: .0119 and .0024 respectively, for the prob of being over 20, is this at all right?

    B:So I put them each into the central limit theorem and got: .1892 for the first and .1591 for the second
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