SOLUTION: Food allergies affect an estimated 7% of children under age 5 in the US. What is the probability that in a kindergarten class of 12 kids under age 5 at least one of them has food

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Question 1142669: Food allergies affect an estimated 7% of children under age 5 in the US.
What is the probability that in a kindergarten class of 12 kids under age 5 at least one of them has food allergies?

Answer by ikleyn(52928) About Me  (Show Source):
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Consider the complement probability that no one of 12 kids is affected.


It is   %281-0.07%29%5E12 = 0.93%5E12 = 0.4186.


Then the probability under the question is the complement to it, i.e.  1 - 0.4186 = 0.5814 = 58.14%.    ANSWER

Solved.