Author Question: An exit poll during a recent election revealed that 55 of those voting were women and that 65 of ... (Read 150 times)

futuristic

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An exit poll during a recent election revealed that 55 of those voting were women and
  that 65 of the women voting favored Democratic candidates.
 
  What is the probability
  that a randomly chosen participant of the exit poll would be a woman who favored
  Democratic candidates?

Question 2

Suppose there is a 35 chance that a risky stock investment will end up in a total loss of
  your investment. Because the rewards are so high, you decide to invest in three
  independent risky stocks.
 
  What is the probability that all three stocks end up in total
  losses?



Gabe

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Answer to Question 1

P(woman and favored Democrats) = P(woman) P(favored Democrats  woman) = .55 .65 = .3575

Answer to Question 2

Let Li be the event that stock i ends up in a total loss.
P(all three stocks end in total loss) = P(L1 L2 L3)
= P(L



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