Mathematics, 10.07.2019 17:10, komari0217

An urn contains nine red balls and eight blue balls. four balls are drawn at random, without replacement. (a) what is the probability that all four balls are red? (round your answer to four decimal places.) (b) what is the probability that two of the balls are red and two are blue? (round your answer to four decimal places.)

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An urn contains nine red balls and eight blue balls. four balls are drawn at random, without replace...