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December 20, 2014

December 20, 2014

Posted by **veedu** on Monday, June 18, 2012 at 12:20pm.

- stat -
**MathGuru**, Monday, June 18, 2012 at 5:34pmMean = np = 100 * 0.5 = ?

Standard deviation = √npq = √(100 * 0.5 * 0.5) = ?

Note: q = 1 - p

Finish the calculations, then use z-scores.

z = (x - mean)/sd

Note: x = 55

Determine the probability using the z-score and a z-table.

I hope this will help get you started.

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