Sarah is informed that both of her 1-year-old twin daughters are of "normal" weight. She is then informed that one weighs 7.3 kilograms (16 pounds) and the other weighs 11.8 kilograms (26 pounds). How is this possible?
A) One of the twins likely has Down syndrome.
B) The daughters were likely weighed incorrectly.
C) The "normal" weight range for a 1-year-old is very wide.
D) The initial "normal" information was incorrect.

Question

Quizplus · Accepted Answer

The "normal" weight range for 1-year-olds is very wide, so it is possible for twins to have a significant weight difference and still fall within the normal range.

Sarah Is Informed That Both of Her 1-Year-Old Twin Daughters