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Statistics 250

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In a normal distribution, what z-score value separates the highest 90% of the scores from the rest of the distribution?
a)z = -1.28
b)z = 1.28
c)z = -0.13
d)z = 0.13

  • Statistics 250 - ,

    Look up the Z scores in the back of your stat text labeled something like "areas under the normal distribution." That should give you the answer.

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