Homework Help: statistics

Posted by Rebecca on Friday, October 15, 2010 at 1:02am.

A company manufactures calculators in batches of 64 and there is a 5% rate of defects. What is the standard deviation for the number of defects per batch?

statistics - MathGuru, Friday, October 15, 2010 at 7:43pm
Standard deviation:

sd = √npq = √(64)(.05)(.95) = ?

Note: q = 1 - p

I'll let you finish the calculation.
statistics - Tina, Monday, October 22, 2012 at 11:39pm
0.95

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