statistics
posted by Harley on .
1. The qualitycontrol inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Suppse the batch contains 2% defective syringes. Find sigma.
Please show work.
Thanks

sigma = sqrt [np(1p)]
http://stattrek.com/Lesson2/Binomial.aspx 
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