The weights for newborn babies is approximately normally distributed with a mean of 6 pounds and a standard deviation of 1.5 pounds.

Consider a group of 1000 newborn babies:

1. How many would you expect to weigh between 4 and 7 pounds?

2. How many would you expect to weigh less than 6 pounds?

3. How many would you expect to weigh more than 5 pounds?

4. How many would you expect to weigh between 6 and 9 pounds?