3. About 10% of an army is of blood type O-(universal donor). Answer questions b

Question

3. About 10% of an army is of blood type O-(universal donor). Answer questions below and define all relevant random variables, their distributions and parameters clearly before finding the probability. (a) What is the probability that a random sample of 10 soldiers from this army wil have at least (b) What is the probability that at least 10 soldiers would have to be tested before someone with (c) How many soldiers with O- blood type would you expect to find of this blood type in a 1 person of the O blood type? O- blood type is found? deployment of 500 soldiers?

Explanation / Answer

A. Probality of random sample of 10 Soliders 1/10

B. Probabilty of 10 Soliders is 0.

C. 10 Solider becase 500 people O negative on 10% 50/500=10

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