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Normal Distribution and z-Scores
Grade Level
Algebra II
ALG2.211 Normal Distribution and z-Scores
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A value has z = -3.0 in a normal distribution. Which conclusion is most reasonable?
A
The value is exactly at the mean.
B
The value is within 3 units of the mean.
C
The value is 3 units below the mean.
D
The value is extremely unusual (about 3 standard deviations below the mean).
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