February 21, 2017

Homework Help: Math

Posted by Lenny on Friday, October 3, 2008 at 5:20am.

150 students sat exams. The following elements were calculated
ΣFX = 10200
Σ(x-μ)F = 196348
Determine the number of students whose marks were within 2 standard deviations of the mean score

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