There are 18 girls and 12 boys in an 8th grade class. Two students are chosen to go on the field trip. What is the probability that both students picked are boys? (Students cannot be picked twice)

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