Tom drops a coin from the top of a building. tom is 90 meters from the ground when he drops the coin. a) what is the height of the coin exactly 3 seconds after he releases the coin? b) when the coin hits the ground, how much time has passed from when it was dropped until impact with the ground?

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