The probability that a person in the United States has type B* blood is 13%. Four unrelated people in the United States are selected at random. Complete parts (a) through (d). (a) Find the probability that all four have type B blood. The probability that all four have type B blood is (Round to six decimal places as needed.) (b) Find the probability that none of the four have type B blood. The probability that none of the four have type B blood is (Round to three decimal places as needed.) (c) Find the probability that at least one of the four has type B blood. The probability that at least one of the four has type B* blood is (Round to three decimal places as needed.) (d) Which of the events can be considered unusual? Explain. Select all that apply. A. The event in part (a) is unusual because its probability is less than or equal to 0.05. OB. The event in part (c) is unusual because its probability is less than or equal to 0.05. OC. None of these events are unusual. OD. The event in part (b) is unusual because its probability is less than or equal to 0.05.
The probability that a person in the United States has type B* blood is 13%. Four unrelated people in the United States are selected at random. Complete parts (a) through (d). (a) Find the probability that all four have type B blood. The probability that all four have type B blood is (Round to six decimal places as needed.) (b) Find the probability that none of the four have type B blood. The probability that none of the four have type B blood is (Round to three decimal places as needed.) (c) Find the probability that at least one of the four has type B blood. The probability that at least one of the four has type B* blood is (Round to three decimal places as needed.) (d) Which of the events can be considered unusual? Explain. Select all that apply. A. The event in part (a) is unusual because its probability is less than or equal to 0.05. OB. The event in part (c) is unusual because its probability is less than or equal to 0.05. OC. None of these events are unusual. OD. The event in part (b) is unusual because its probability is less than or equal to 0.05.
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 4ECP: Show that the probability of drawing a club at random from a standard deck of 52 playing cards is...
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Transcribed Image Text:The probability that a person in the United States has type B blood is 13%. Four unrelated people in the United States are selected at random. Complete parts (a) through (d).
3 #
E
D
(a) Find the probability that all four have type B blood.
The probability that all four have type B blood is
(Round to six decimal places as needed.)
(b) Find the probability that none of the four have type B* blood.
The probability that none of the four have type B blood is
(Round to three decimal places as needed.)
(c) Find the probability that at least one of the four has type B blood.
The probability that at least one of the four has type B* blood is
(Round to three decimal places as needed.)
(d) Which of the events can be considered unusual? Explain. Select all that apply.
A. The event in part (a) is unusual because its probability is less than or equal to 0.05.
B. The event in part (c) is unusual because its probability is less than or equal to 0.05.
OC. None of these events are unusual.
OD. The event in part (b) is unusual because its probability is less than or equal to 0.05.
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