score: 71.46%, 17.15. Question Help Score: 0.25 of 1 pt 3.2.27 The probability t
ID: 2949808 • Letter: S
Question
score: 71.46%, 17.15. Question Help Score: 0.25 of 1 pt 3.2.27 The probability that a person in the United States has type B+ blood is 7% 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. The probability that all three have type B' blood is 000343. Round to six decimal places as needed.) (b) Find the probability that none of the three have type B' blood The probability that none of the three have type B' blood is 804 Round to three decimal places as needed.) (c) Find the probability that at least one of the three has type B' blood The probability that at least one of the three has type B' blood is Round to three decimal places as needed)Explanation / Answer
solution:-
given that p = 0.07 then q = 1 - p = 1 - 0.07 = 0.93
p(x ? 1) = P(X = 1) + P(X = 2) + P(X = 3)
= 0.1816+ 0.0137+0.0003
= 0.196
BY FORMULA
p(X = x) = ncr * pr * qn-r
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