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    vvicens's Avatar
    vvicens Posts: 3, Reputation: 1
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    #1

    Oct 9, 2012, 05:33 PM
    Statistics & Probability
    For a normal population with a μ = 70 and σ = 20. What is the probability of obtaining a sample mean greater than 75:

    a. For a random sample of n = 4 scores?

    b. For a random sample of n = 16 scores?

    c. For a random sample of n = 100 scores?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Oct 9, 2012, 10:07 PM
    Show your attempt please

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