Answer
34-week baby: $z=-0.303$
40-week baby: $z=-0.426$
We can conclude that the 40-week gestation period baby weighs less relative to the 34-week baby.
Work Step by Step
$z=\frac{x-μ}{σ}$
34-week baby:
$z=\frac{2400-2600}{660}=-0.303$
40-week baby:
$z=\frac{3300-3500}{470}=-0.426$
We can conclude that the 40-week gestation period baby weighs less relative to the 34-week baby.
