Homework Help: statistics

Posted by ali on Saturday, May 5, 2012 at 9:06am.

a set of maths exame score mean is 70 and variance is 8. a set of english score has mean is 74 and variance is 16. for which exame whould a score of x=78 have a higher standing?

statistics - PsyDAG, Sunday, May 6, 2012 at 3:59am
Standard deviation (SD) = square root of variance

Z = (score-mean)/SD

Whichever Z score is the highest.

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