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Math Help - Random Sample

  1. #1
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    Random Sample

    If X_1,X_2,....... X_n constitute a random sample from an infinite population with mean \mu and variance \sigma^2, obtain E[\bar x] and Var(\bar x)
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  2. #2
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    Quote Originally Posted by zorro View Post
    If X_1,X_2,....... X_n constitute a random sample from an infinite population with mean \mu and variance \sigma^2, obtain E[\bar x] and Var(\bar x)
    You don't make it clear whether or not a derivation is required. So I will just refer you to a website that has the standard results which are the answers to your questions: Sampling distribution - Wikipedia, the free encyclopedia
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