Question

parents are told that their newborn is in the 90th percentile for weight. this means that their child is: above average weight. below average weight. average weight. the answer is unknowable without comparing to height.

Explanation:

The nth percentile of a data - set means that n% of the data values are less than or equal to that value. The 90th percentile for weight implies that 90% of newborns have a weight less than or equal to this newborn's weight. So, this newborn is heavier than 90% of other newborns, which means it is above average weight.

Answer:

A. above average weight