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April 24, 2014

Homework Help: statistics

Posted by tim on Sunday, February 26, 2012 at 3:08pm.

12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding z
score equaled +1.50, and the standard deviation equaled 7, what was the average grade on
this exam?

a. 95.5
b. 74.5
c. 78.0
d. Cannot determine without knowing how many took the exam
e. None of the above

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