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Exercise
May 08'23
Answer
Solution: B
This question is equivalent to “What is the probability that 9 different chips randomly drawn from a box containing 4 red chips and 8 blues chips will contain the 4 red chips?” The hypergeometric probability is
[[math]]
\frac{\binom{4}{4}\binom{8}{5}}{\binom{12}{9}} \frac{1(56)}{220} = 0.2545.
[[/math]]
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