Here is the probability model for the blood type of a randomly chosen person in the United States. Blood type O A B AB Probability 0.57 0.22 0.1 0.11 Maria has type B blood. She can safely receive blood transfusions from people with blood types O and B. What is the probability that a randomly chosen American can donate blood to Maria? %
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Step 1: Calculate the probability that a randomly chosen person in the United States has blood type O or B. Show more…
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Here is the probability model for the blood type of a randomly chosen person in the United States. Blood Type O A B AB Probability 0.31 0.34 0.12 ? (a) What is the probability that a randomly chosen American has type AB blood? Please use 2 decimal places. (b) Maria has type B blood. She can safely receive blood transfusions from people with blood types O and B. What is the probability that a randomly chosen American can donate blood to Maria? Please use 2 decimal places. (c) What is the probability that a randomly chosen American does not have type O blood? Please use 2 decimal places.
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. Maria has type B blood and she can safely receive blood transfusions from people with blood types O and B. What is the probability that a randomly chosen African American person can donate blood to Maria? State your probability in decimal form, not as a percent!
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Blood Types and Rh Factors In addition to being grouped into four types, human blood is grouped by its Rhesus (Rh) factor. Consider the figures below which show the distributions of these groups for Americans. $$ \begin{array}{lcccc} & \mathbf{O} & \mathbf{A} & \mathbf{B} & \mathbf{A B} \\ \hline \mathrm{Rh}+ & 37 \% & 34 \% & 10 \% & 4 \% \\ \mathrm{Rh}- & 6 & 6 & 2 & 1 \end{array} $$ Choose one American at random. Find the probability that the person a. Is a universal donor, i.e., has $\mathrm{O}$ -negative blood b. Has type $O$ blood given that the person is $\mathrm{Rh}+$ c. Has $A+$ or $A B-$ blood d. Has $\mathrm{Rh}-$ given that the person has type $\mathrm{B}$
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