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?

2 answers

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

Note: q = 1 - p

I'll let you finish the calculation.
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