The probability that an African American person in the United States has type O+ blood is 47%.

Question:

The probability that an African American person in the United States has type O+ blood is 47%. Six unrelated African American people in the United States are selected at random.

(a) Find the probability that all six have type O+ blood.

(b) Find the probability that none of the six have type O+ blood.

(c) Find the probability that at least one of the six has type O+ blood.

(d) Which of the events can be considered unusual? Explain.


Use the Multiplication Rule.

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