Saturday

April 18, 2015

April 18, 2015

Posted by **john** on Sunday, August 5, 2007 at 9:45am.

A company manufacturers batteries in BATCHES of 18 and there is a 3% rate of defect. Find the standard deviation for the number of defects per batch.

The probability of a defect is p = 0.03

The mean number of defects in a batch of N = 18 is m = p N = 0.03 x 18 = 0.54

The standard deviation of the number of defects in a batch of 18 is

sigma = sqrt [N p (1-p)] = 0.72, which actually exceeds the mean value in this case.

**Answer this Question**

**Related Questions**

statistics - A company manufacturers batteries of 18 and there is a 3% rate of ...

statistics - a company manufactures batteries in batches of 18 and there is a 3...

Statistics - A company manufactures calculators in batches of 64, and there is a...

statistics - A company manufactures calculators in batches of 64 and there is a ...

statistics - A company manufactures calculators in batches of 64 and there is a ...

math - A company manufactures calulatoirs in batches of 64 and ther is a 5% rate...

statistics - A company produces batteries whose lifetimes are normally ...

Statistics - . A certain company makes 12-volt car batteries. After many years ...

Statistics - A battery manufacturer is positive that its AA batteries last for 1...

Statistics - A certain company makes 12-volt car batteries. After many years of ...