Final answer:
The probability that a person is both a liar and a supporter of the polemic party can be calculated by multiplying the probability of being a polemic party supporter by the probability of being a liar.
Step-by-step explanation:
Let's define p as the probability that a randomly selected voter is a supporter of the polemic party. We are given that 50.08% of voters reported their intention to vote for the polemic party, so p = 0.5008.
Next, let's define q as the probability that a randomly selected polemic party supporter is a liar. We are given that 18% of polemic party supporters are liars, so q = 0.18.
To find the probability that a person is both a liar and a polemic party supporter, we can multiply the probabilities p and q: p * q = 0.5008 * 0.18 = 0.090144.
Therefore, the probability that a voter is both a liar and a polemic party supporter is 0.090144, or 9.01%.