According to the World Health Organization (WHO) Child Growth Standards, the head circumference for boys at birth is normally distributed with a mean of 34. 5cm and a standard deviation of 1. 3cm. For girls, the mean is 33. 9cm with a standard deviation of 1. 2cm. Caleb (boy) and Ticey (girl) are twins. Caleb was born with a head circumference of 33. 2cm and Ticey was born with a head circumference of 32. 7cm.

Which child’s head circumference is smaller relative to other newborns of the same gender?

Group of answer choices

Caleb

Ticey

They are the same size relative to other children of the same gender.