Answer
De-Fen Yao is taller relative to the population of the same gender.
Work Step by Step
The z-scores: Sultan Kosen: $z=\frac{value-mean}{standard \ deviation}=\frac{247-175}{7}=10.29$.
De-Fen Yao: $z=\frac{value-mean}{standard \ deviation}=\frac{236-162}{6}=12.33$. De-Fen Yao's z-score is higher, therefore she is taller relative to the population of the same gender.
