Three balls are randomly drawn from an urn that contains four white and eight red balls. (a) What is the probability of drawing a red ball on the third draw? (Round your answer to 3 decimal places.)
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Three balls are randomly drawn from an urn that contains four white and eight red balls.
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- A manufacturer has determined that a machine averages one faulty unit for every 500 it produces. What is the probability that an order of 300 units will have one or more faulty units?Show that the probability of drawing a club at random from a standard deck of 52 playing cards is the same as the probability of drawing the ace of hearts at random from a set of four cards consisting of the aces of hearts, diamonds, clubs, and spades.