statistics

What z-score values form the boundaries for the middle 60% of a normal
distribution?
a. z = +0.25 and z = –0.25
b. z = +0.39 and z = –0.39
c. z = +0.52 and z = –0.52
d. z = +0.84 and z = –0.84

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  3. 👁 1,036
  1. How about d?

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    2. 👎 0
  2. what was the answer???

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    2. 👎 0

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