The probability that a randomly selected adult has ever experienced a migraine headache is 0.4. 11 adults are randomly selected. a. What is the probability that exactly 2 adults have experienced a migraine headache? Round to four decimal places if necessary b. What is the probability that none of them have experienced a migraine headache? Round to four decimal places if necessary c. What is the probability that at most one has experienced a migraine headache?

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