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March 27, 2017

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A random sample of size 36 is taken from a population with mean 50 and standard deviation 5. Find P( < 51.5).

  • statistics - ,

    If this is for distribution of means,

    Z = (score-mean)/SEm

    SEm = SD/√n

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability related to the Z score.

  • statistics - ,

    .9641

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