Consider the following joint probability table which shows the portion of sampled individuals by their political affiliation who are in favor of, are opposed to, or are not sure about a particular issue. (Report your answers to two decimal places.)

1. What is the probability that a sampled individual is in favor of the particular issue?
2. Given that the sampled individual is in opposed to the particular issue, what is the probability that the sampled individual has political affiliation of Democrat?
3. What is the probability that an individual chosen at random is not sure about the particular issue or is Republican?
4. Are having a Republican political affiliation and being in favor of the particular issue independent events? Explain your answer mathematically.

Total Political Affiliation Democrat Republican Independent Total Opinion Favor Oppose Not Sure 0.15 0.24 0.03 0.18 0.13 0.08 0.06 0.07 0.06 0.39 0.44 0.17 0.42 0.39 0.19 1.00