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rk.asp ld 443751932 Math 1324 Math for Business-Fall 2017 / DEICRN 37923/SS Homework: Homework 9,4 Score: 0 of 1 pt 1 of 10 (10 complete) Social Sci 9.4.1 10.9% of the population is 65 or older Find the probablity that the following number of persons selected at random from 50 people are 65 or older The probability that all are 65 or older is 0 000 (Type an integer or decimall rounded to the nearest thousandth as needed ) The probability at least 3 are 65 or older is (Type an integer or decimal rounded to the nearest thousandth as needed.) Enter your answer in the answer box and then click Check Answer Clear Al All parts showing

Explanation / Answer

9.4.1 (out of 50 person) Using P(x)=nCx*p^x*q^(n-x) P(x 3)=1-P(x < 3)= 1-(.891^50 + (50(.109)^1(.891)^49)+(1225(.109)^2(.891)^48)) 0.920646085 9.4.1 (out of 25 person) Using P(x)=nCx*p^x*q^(n-x) P(x 3)=1-P(x < 3)= 1-(.897^25 +( 25(.103)^1(.897)^24)+ (300(.103)^2(.897)^23)) 0.483148624 9.4.1 (out of 20 person) Using P(x)=nCx*p^x*q^(n-x) P(x 2)= P(0)+ P(1) + P(2) = .893^20 + 20(.107)^1(.893)^19 + 190(.107)^2(.893)^18 0.636916153

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