Question: Consider the following joint frequency table which summarizes voting trends in the most recent Presidential election.

PARTY AFFILIATION

Democratic Republican Independent TOTAL

VOTED IN 2008

Voted 275 280 255 810

Didn’t Vote 65 70 55 190

TOTAL 340 350 310 1000

1. Convert the table above to a joint probability table (15 points).
   Use your table in part a) to find the following probabilities.
2. That a survey subject’s party affiliation is Republican (3 points).
3. That a survey subject did not vote in the 2008 Presidential election (3 points).
4. That a survey subject’s party affiliation is Republican and that she or he did not vote in the 2008 Presidential election (3 points).
5. That a survey subject’s party affiliation is Republican or that she or he did not vote in the 2008 Presidential election (5 points).
6. Suppose it is known that a survey subject’s party affiliation is Republican. What is the probability that she or he did not vote in the 2008 Presidential election (5 points).
7. What is the probability that two randomly selected survey subjects did not vote in the 2008 Presidential election. (Hint: This is an "and" probability. Assume independence) (5 points).

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