815. Weighted Average via Total Probability
medium
A recommendation system serves three user segments: new (20%), returning (50%), and loyal (30%). Click-through rates are 5%, 12%, and 18% respectively. What is the overall click-through rate?
A recommendation system serves three user segments: new (20%), returning (50%), and loyal (30%). Click-through rates are 5%, 12%, and 18% respectively. What is the overall click-through rate?