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The results of CNN's 2008 presidential election poll are given in the table below. ( Round your answers to four decimal places .
The results of CNN's 2008 presidential election poll are given in the table below. (Round your answers to four decimal places.)
Age of voter Obama McCain Other / No Answer
18-29 11.9% 5.8% 0.4%
30-44 15.1% 13.3% 0.6%
45-64 18.5% 18.1% 0.4%
65 and older 7.2% 8.5% 0.3%
(a) Find the probability that a voter is under 30, given that the voter voted for McCain.
(b) Find the probability that a voter is 30 or over, given that the voter voted for McCain.
