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

statistics - joe blow, Tuesday, February 28, 2012 at 3:43pm
74.5
(85-64.5)/7

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