Only Child¶
Roughly 1 in 4 people in the U.S. are an only child (a person with no siblings). You want to target these people with ads
for nursing homes, as you know they'll have trouble taking care of their parents without siblings 
.
You develop two models, A and B, that predict the probability someone is an only child based on their Instagram profile.
You plot their Precision-Recall curves after applying these models to some validation data.
Which model should you select?