Question

Here is the probability model for the blood type of a randomly chosen person in the United States:Blood Type O А B ABProbability 0.14 0.32 0.01 ?(a) This probability model isA. discrete.B. continuousC. equally likelyD. None of the above.(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 arandomly chosen American can donate blood to Maria?A. 0.01B. 0.15C. 0.33D. None of the above.(c) What is the probability that a randomly chosen American does not have type O blood?A. 0.86B. 0.68C. 0.14D. None of the above

Answer 1

a) A probability distribution is called continuous if its distribution function is continuous.

• Answer a: B. continuous.,

b)

`0.14+0.01=0.15`

• Answer b: B. 0.15

c)

`1-0.14=0.86`

• Answer c: A. 0.86