The table shows the political affiliations of U.S. voters and their positions on supporting stronger immigration enforcement.

a) What's the probability that
i) A randomly chosen voter favors stronger immigration enforcement?
ii) A Republican favors stronger enforcement?
iii) A voter who favors stronger enforcement is a Democrat?
b) A candidate thinks she has a good chance of gaining the votes of anyone who is a Republican or in favor of stronger enforcement of immigration policy. What proportion of voters is that?

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Stronger Immigration Enforcement Favor Oppose No Opinion Republican 0.30 0.04 0.03 Democrat 0.22 0.11 0.02 Other 0.16 0.07 0.05