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.
We have that the probability =
C(6, 4) (.40)^4 (.60)^2 ≈ 0.13824 ≈ 13.82%