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In a study of blood donors, 200 were classified as group O and 250 had a classification other than group O. What is the probability that a person will have group O blood? (Enter…

In a study of blood donors, 200 were classified as group O and 250 had a classification other than group O. What is the probability that a person will have group O blood? (Enter…
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In a study of blood donors, 200 were classified as group O and 250 had a classification other than group O. What is the probability that a person will have group O blood? (Enter your answer as a fraction.)

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User Jaymjarri
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1 Answer

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Probability of O = (number with O)/(Total number of cases)

It always works like this.

P(O) = 200/450 = 4/9
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User Inscaven
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