Posted by **mufasa** on Tuesday, November 19, 2013 at 7:41pm.

i need help: A national achievement test is administered annually to 9th graders. The test has a mean score of 100 and a standard deviation of 15. If Johnâ€™s z-score is 1.20, what was his score on the test?

- algebra -
**Kuai**, Tuesday, November 19, 2013 at 8:37pm
0.8849

- algebra -
**Anonymous**, Monday, December 14, 2015 at 3:34pm
118

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