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The probability that a randomly chosen citizen-entity of Cygnus is of pension age is
approximately 0.7. What is the probability that, in a randomly selected sample of 3 citizen-
entities, all of them are of pension age? Round your answer to four decimal places.
Solution
P(1st is of pension age)=0.7 P(2nd is of pension age)=0.7 P(3rd is of pension
age)=0.7 P(1st is of pension age AND 2nd is of pension age AND 3rd is of pension age)=
0.7x0.7x0.7x=0.3430

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The probability that a randomly chosen citizen-entity of Cygnus is o.pdf

  • 1. The probability that a randomly chosen citizen-entity of Cygnus is of pension age is approximately 0.7. What is the probability that, in a randomly selected sample of 3 citizen- entities, all of them are of pension age? Round your answer to four decimal places. Solution P(1st is of pension age)=0.7 P(2nd is of pension age)=0.7 P(3rd is of pension age)=0.7 P(1st is of pension age AND 2nd is of pension age AND 3rd is of pension age)= 0.7x0.7x0.7x=0.3430