Brian chooses an integer, multiplies it by 4 then subtracts it by 30. He then multiplies his number by 2 and finally subtracts 10. His answer is a 2 digit number. What is the largest Integer he could have chosen?

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