Answer:
see below
Step-by-step explanation: 5 16 9 34
this a fairly simple calculation once you know the formula for z score, but understanding the z scoring is more confusing
z = ( x - μ ) / δ μ mean of the sample, δ standard deviation of the sample
x is the observed value to check the z score
32 to 35 weeks have a mean weight of 2700 grams and a standard deviation of 900 grams
z = ( x - μ ) / δ 33-week gestation period baby weighs 2575 grams
= (2575 - 2700) / 900
= -0.138
gestation period of 40 weeks have a mean weight of 3100 grams and a standard deviation of 460 grams.
z = ( x - μ ) / δ 40-week gestation period baby weighs 2975 grams
= (2975 - 3100) / 460
= -0.272
Which baby weighs less relative to the gestation period?
A z-score close to 0 says the data point is close to average.
based on that the 33 week baby is closer to average
the 40 week baby is farther from average
hence the 40 week baby weighs less relative to the gestation period
