i need question number 2 IN DETAIL! How did u get the answer? I NEED FULL SOLUTIONS WITH EXPLANATION EITHER IN WORDS OR AS EQUATIONS OR BOTH. THANK YOU. I WILL MARK BRAINLIEST TO THE BEST ANSWER.

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

Interpret the following expression (5y^2-7)^3/(2y)^2

Sawsan recorded the favorite sport of students at her school. she surveyed 200 students. how many students chose tennis?