Question

The probability that a person in the United States has type B + blood is 11%. Three unrelated people in the United States are selected at random. Complete parts (a) through(d).

(a) Find the probability that all three have type B+ blood?
(Round to six decimal places as needed.)

(c) Find the probability that at least one of the three has type B+ blood.(Round to three decimal places as​ needed.)

Which of the events can be considered​ unusual? Explain. Select all that apply.
A. None of these events are unusual
B. The event in part (c) is unusual because its probability is less than or equal to 0.05.
C.The event in part (a) is unusual because its probability is less than or equal to 0.05The event in part (a) is unusual because its probability is less than or equal to 0.05.
D. The event in part (b) is unusual because its probability is less than or equal to 0.05.

Answer 1