Final answer:
The probability that all three selected people have type B blood is approximately 0.22%.
Step-by-step explanation:
To find the probability that all three selected people have type B blood, we can use the multiplication rule for independent events. The probability of each person having type B blood is 0.13, so the probability of all three having type B blood is 0.13 x 0.13 x 0.13 = 0.002197, or approximately 0.22%. Therefore, the probability that all three people have type B blood is approximately 0.22%.