A rock is thrown upward with a velocity of 12 meters per second from the top of a 34 meter high diff, and it moloses the diff on the way back down, When will the rock be 6 meters from ground level? Round your answer to two decimal places,

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