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Stats q/help

  1. Aug 4, 2008 #1
    ok guys , i need an answer to this question , use both moment generating function and cummulative function to show that z=(x(bar)-[tex]\mu[/tex])/([tex]\sigma[/tex]/[tex]\sqrt{n}[/tex]) if x(bar) is based on a random sample of size n from a normal([tex]\mu[/tex],[tex]\sigma[/tex]^2)
    Last edited: Aug 4, 2008
  2. jcsd
  3. Aug 6, 2008 #2
    Sorry this question is rather vague. Do you wish to prove that a normalized normal is a normal (0,1)? The x(bar) is deceiving, as it usually means sample mean, in the case you are taking a sample mean then z is not a distribution.
  4. Aug 9, 2008 #3
    mannaged to prove it ,and jst b4 the submition date ,thnx 4 ya help
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