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Thread: Finding Probability Xbar?

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    Finding Probability Xbar?




    Suppose a simple random sample of size n = 38 is obtained from a population of Mean = 66 and Standard Deviation = 19

    a) P(x-bar < 69.9)
    b) P(x-bar (greater than or equal to) 67.6))

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    Quote Originally Posted by greenpumpkins View Post
    Suppose a simple random sample of size n = 38 is obtained from a population of Mean = 66 and Standard Deviation = 19

    a) P(x-bar < 69.9)
    b) P(x-bar (greater than or equal to) 67.6))
    Do you know that the distribution of x-bar is?

    Once you figure this out standardize x-bar
    Dr. Zoidberg: Fry, it's been years since medical school, so remind me. Disemboweling in your species, fatal or non-fatal?

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