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September 19, 2014

September 19, 2014

Posted by **Tian** on Wednesday, January 26, 2011 at 1:17am.

(a) has her first child before age 16

(b) has her first child after age 30

(c) has her first child between the ages of 15 and 20

(d) has her first child between the ages of 14 and 28

- statistics -
**PsyDAG**, Wednesday, January 26, 2011 at 11:36amZ = (score-mean)/SD

variance = SD^2

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.

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