6. [3] You are told that 45% of the population supported Obama for President. Yo

Question

6. [3] You are told that 45% of the population supported Obama for President. You are also informed that
of those that supported Obama for President, 54% support increasing taxes for households earning over
$250,000. The percentage of people who supported Obama or want to increase taxes for households
earning over $250,000 is 67.7%. What is the probability that a person chosen at random supported Obama
for President and supports increasing taxes for households earning over $250,000?

7. [3] You are given the following information: P(A) = 0.52, P(B) = 0.23 and that the two events are
disjoint. What is P(A AND B) = ?

Explanation / Answer

% people supporting tax increase and also supported obama = 45*54/100= 24.3%

since events are disjoint(not overlapping), P(A AND B) = 0

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