The weights for newborn babies is approximately normally distributed with a mean of 6.2 pounds and standard deviation of 1.5 pounds. Consider a group of 1200 newborn babies.

1. How many would you expect to weigh between 3 and 9 pounds?
2. How many would you expect to weigh less than 8 pounds?
3. How many would you expect to weigh more than 6 pounds?
4. How many would you expect to weigh between 6.2 and 10 pounds?