The weights for newborn babies is approximately normally distributed with a mean of 6.9 pounds and a standard deviation of 2 pounds. Consider a group of 1500 newborn babies:

1. How many would you expect to weigh between 4 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 5 pounds?

4. How many would you expect to weigh between 6.9 and 10 pounds?

the first option i believe

step-by-step explanation:

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

38 was the other number of your question.