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test2_s02sol

# test2_s02sol - this is not true for discrete random...

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Solutions to ST 370 Online Second Exam, Spring 2002. 1. A list of all possible outcomes. 2. 0.903 = [1-(1-.8)(1-.8)](.95)[1-(1-.9)(1-.9)] 3. 0.30 = Pr(H2|B)Pr(B) = (.75)(.40) 4. 40/170 5. 70/100 ("E. None of the above" is correct.) 6. 100/170 7. 0.97 = Pr(A or B) = Pr(A)+Pr(B)-Pr(A)Pr(B) = .90+.70-(.90)(.70) 8. For any x, Pr(X =< x)=Pr(X < x) for continuous random variables, but
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Unformatted text preview: this is not true for discrete random variables. 9. 0.24 10. 0.8 = 0.5+0.3 = Pr(X =< 2) 11. 0.1098 12. 40.2 = (5)(1.04)+35 13. 1-exp(-lambda*t) 14. 0.0894 = 1 - Pr(X =< 1) X=binomial(pi=.01,n=50) 15. 0.5 = (50)(.01) 16. 11/16 17. 0.199 = Pr(X =< 1) X=Poisson with lambda*t=(.1)(30)=3 18. 0.1035 19. 0.9357 20. E(Y)=a+bE(X)...
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