Asports memorabilia collector has 3³ 1980 baseballcards and 4³ 1990 football cards. how can i write the number of baseball cards and football cards in standard form

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