The probability that a person in the United States has type B+ blood is 1010%. F
ID: 3129283 • Letter: T
Question
The probability that a person in the United States has type
B+
blood is
1010%.
FiveFive
unrelated people in the United States are selected at random. Complete parts (a) through (d).
(a) Find the probability that all
fivefive
have type
B+
blood.The probability that all
fivefive
have type
B+
blood is
nothing .
(Round to six decimal places as needed.)
(b) Find the probability that none of the
fivefive
have type
B+
blood.The probability that none of the
fivefive
have type
B+
blood is
nothing .
(Round to three decimal places as needed.)
(c) Find the probability that at least one of the
fivefive
has type
B+
blood.The probability that at least one of the
fivefive
has type
B+
blood is
nothing .
(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 (c) is unusual because its probability is less than or equal to 0.05.
B.
The event in part left parenthesis a right parenthesis 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.
C.
The event in part (b) is unusual because its probability is less than or equal to 0.05.
D.
None of these events are unusualNone of these events are unusual.
Explanation / Answer
probability that a person in the United States has type B+ blood is .1
a. Find the probability that all fivefive have type B+ blood.
P(X=5) = 5C5*(.1^5)*(.9^0) = 0.00001
b. P(X=0) = 5C0*(.1^0)*(.9^5) = .59049
c. P(atleast one can have B+) = 1-P(no one has B+ blood group) = 1- .59049 = .40951
d. none are unusual
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.