Question: Her younger brother.
Her brother was younger than her.

Answer: yes

Question: well what sort of cookbooks do you um do you usually use
I don't want to know about your cookbook collection.

Answer: no

Question: Therefore, 17% increase in purchase probability brings about a 0.16(17) = 2.7 percent reduction in aggregate demand.
Purchase probability is always present.

Answer:
it is not possible to tell