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A sample of n 4 scores has a mean of m 75 find the


A sample of n = 4 scores has a mean of M = 75. Find the z-score for this sample:

  • If it was obtained from a population with µ = 80 and Ó = 10.
  • If it was obtained from a population with µ = 80 and Ó = 20.
  • If it was obtained from a population with µ = 80 and Ó = 40.

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