Assume that height is a function of age and that H=f(a) is the average height (in inches) for females in the US at age (a) years. What is the practical interpretation of f(z)+20?

Question

a. 20 years older than the average US female who is z inches tall
b. 20 inches taller than the average height of a z year old US female
c. 20 plus the number of US females who are z inches tall

Please provide an exclamation with your answer.

Answer 1

clearly it is (b)