On a certain hot summer's day, 720 people used the public swimming pool. The daily prices are 1.25 for children and 2 for adults. The receipts for admission totaled 1186.5 How many children and how many adults swam at the public pool that day?

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