
Mark M. answered 04/25/15
Tutor
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Mathematics Teacher - NCLB Highly Qualified
Obtain a z-score chart:
http://www.utdallas.edu/dept/abp/zscoretable.pdf
For the 95% line z = 1.645.
At this point the salary is 12.88 + 1.645(0.95) or 14.42.