What's the answer to these math problems? how did you solve it?

Extra points! find the missing dimension! need asap

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

Fill in the table with whole numbers to make 430 in five different ways