Homework Help: statistics

Posted by tara on Saturday, May 12, 2012 at 8:46pm.

a company manufactures batteries in batches of 18 and there is a 3% defect rate. Find the standard deviation for a number of defects per batch?

statistics - MathGuru, Monday, May 14, 2012 at 8:18pm
standard deviation = √npq = √(18 * .03 * .97) = ?

Note: q = 1 - p

I'll let you finish the calculation.

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