Volume and surface area 1.How is this important in manufacturing?
2.why don’t manufacturers follow this and make the packaging more efficient?
Please help with these questions

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample