Question

The probability that a person in the United States has type B' blood is 10 %. Four unrelated people in the United States are selected at random. Find the probability that all four have type B' blood.

Answer 1

To find the probability that all four randomly selected people in the United States have type B' blood, we need to multiply the probabilities of each person having type B' blood.

Step-by-step explanation:

To find the probability that all four randomly selected people in the United States have type B' blood, we need to multiply the probabilities of each person having type B' blood. Since the events are independent, we can multiply the individual probabilities. The probability that one person has type B' blood is 10% or 0.1. So, the probability that all four have type B' blood is 0.1 * 0.1 * 0.1 * 0.1 = 0.0001, or 0.01%.