The lengths of pregnancies in a small rural village are normally distributed with:

$\displaystyle \mu=$ 266      $\displaystyle \sigma=$ 16

In what range would you expect to find the middle 95% of most pregnancies?

Between and

If you were to draw samples of size 60 from this population, in what range would you expect to find the middle 95% of most averages for the lengths of pregnancies in the sample?

Between and round to 1 decimal place