# statistics

posted by tara

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?

1. MathGuru

standard deviation = √npq = √(18 * .03 * .97) = ?

Note: q = 1 - p

I'll let you finish the calculation.

2. Lisa

A company manufactures batteries in batches of 15 and there is a 3% rate of defects. Find the standard deviation for the number of defects per batch

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