Plz i need !
write the ratio in three different formats: a to b, a : b, a/b
in a year, there are 4 months that have 30 days.
write a ratio of the months with 30 days to the months with other than 30 days.
a.1 to 3, 1: 3, 1/3
b.1 to 2, 1 : 2, 1/2
c.2 to 1, 2: 1, 2/1
d.3 to 1, 3: 1, 3/1

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?