# What Is the Percentage of Defects in This Process?

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• #235894

mitragliar
Participant

You select 4 samples of 25 macarons each; the weight of each piece is measured. The mean is 22g; the standard deviation of the sample means is 1.5g.

Knowing that a box of macarons contains 9 pieces, and that the average weight of macarons in the box should be at least 20g (no USL: the more the better), which is the percentage of defects in the process?

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#235901

Katie Barry
Member

@mitragliar It looks like this is a homework question.

The more details you provide, the more likely you are to get a response. What do YOU think you should do? Why or why not? The iSixSigma audience is helpful, but they like to see that someone is putting forth a good-faith effort; they are not here to do your work for you.

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#235963

Mike Carnell
Participant

@mitragliar You have a mean and Standard deviation and a one sided spec. That is enough to calculate a what?

A defect would be what was less than the spec.

• This reply was modified 2 years, 7 months ago by Mike Carnell.
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