3. (Contingency table) The following contingency table shows visitors to Mt. Baker ski resort sorted by age and the sport they were participating in on that day. 0-12 12-25 26-40 40+ Total Ski 44 60 83 41 228 Snowboard 20 93 65 19 197 Total 64 153 148 60 425 (a) What is the probability that a randomly chosen visitor is aged 12-25? (b) What is the probability that a visitor is a snowboarder given that they are aged 12-25? (c) Are P(age 26-40) and P(Skier) independent? How do you know