• 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…[Read more]