(Solution) - The probability that a person in the United States has -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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The probability that a person in the United States has type B+ blood is 9%. Five unrelated people in the United States are selected at random.
(a) Find the probability that all five have type B+ blood.
(b) Find the probability that none of the five have type B+ blood.
(c) Find the probability that at least one of the five has type B+ blood.
(d) Which of the events can be considered unusual? Explain.