mitragliar started the topic What Is the Percentage of Defects in This Process? in the forum Tools & Templates 1 year, 1 month ago
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?