SOLUTION: In a large population, 66% of the people have been vaccinated. If 4 people are randomly selected, what is the probability that at least one of them has been vaccinated?

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Question 1196782: In a large population, 66% of the people have been vaccinated. If 4 people are randomly selected, what is the probability that at least one of them has been vaccinated?
Answer by ikleyn(52878) About Me  (Show Source):
You can put this solution on YOUR website!
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The probability that NO ONE of 4 has been vaccinated is  

    %281-0.66%29%5E4 = 0.34%5E4 = 0.01336.


Then the probability under the question is the complement to it

    P = 1 - 0.01336 = 0.98664   (rounded).    ANSWER

Solved.