Question

Suppose that a person can have one of four blood types: A, B, O, or AB. Consider the following statement: "If a person is randomly selected from the population, the probability that he/she has blood type A is 1/4." Is this statement true?

Select the correct option:

A. No, we cannot assume that the four blood types are mutually exclusive.

B. No, we cannot assume that the four blood types are equally likely.

C. Yes, the four blood types are independent.

D. Yes, since there are four blood types.

Answer 1

No, we cannot assume that the four blood types are equally likely.

Step-by-step explanation:

No, we cannot assume that the four blood types are equally likely. The statement assumes that the probability of having blood type A is 1/4, but in reality, the probabilities of having different blood types vary. According to the American Red Cross, about one out of nine people in the United States have type B blood. Therefore, the probability of having blood type A is not necessarily 1/4. The correct answer is B. No, we cannot assume that the four blood types are equally likely.