Posted by
**Robbie** on
.

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

Saturday

March 25, 2017
Posted by
**Robbie** on
.

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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