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According to a​ newspaper, 40​% of bicycles stolen in a certain country are recovered. Find the probability​ that, in a sample of 6 randomly selected cases of bicycles stolen in the​ country, exactly 4 out of 6 bikes are recovered.

Guest Jul 9, 2017
edited by Guest  Jul 9, 2017
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We have that the probability =

 

C(6, 4) (.40)^4 (.60)^2  ≈ 0.13824  ≈  13.82%

 

 

 

cool cool cool

CPhill  Jul 9, 2017
edited by CPhill  Jul 9, 2017

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