3. Answer the following. (a) The owner of an ice-skating rental company heard that ice-skate rentals are predicted to increase a whopping 50% this year over last year. Explain why the number of increases might not be quite as. whopping as it sounds. (b) The owner also heard that ice-skate rentals tend to increase or decrease as hot chocolates sales increase or decrease. The owner is fairly sure that ice skating doesn't make people crave hot chocolate, nor does drinking hot chocolate make people want to ice skate. What is the most likely lurking variable? Explain