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A person with type O blood can donate red blood cells to anybody because type O blood is the universal blood type. About 44% of the U.S. population has type O blood. University High held a blood drive where 50 students donated blood.

Part A: What is the probability that exactly 25 of the students had type O blood? (5 points)

Part B: What is the probability that at least 25 of the students had type O blood? (5 points)

Sagot :

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