test2_f04sol

test2_f04sol - 7 125.3 =(10.67 132 8 2.10...

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Solutions to ST 370 Online Test 2, Fall 2004 1. .9530 = .9608 - .0078 2. .979 = [1-(1-.90)(1-.80)][1-(1-.95)(1-.98)]=(.98)(.999) 3. .594 = Pr(X=>2) = 1 - Pr(X=<1) = 1 - [Pr(X=0)+Pr(X=1)] =1-[(2)^0]*exp(-2)-[(2)^1]*exp(-2)=1-(1+2)*exp(-2) = 1 - 3exp(-2) = 1-.406. You could also get Pr(X=<1) from Table C, p. 533, directly. 4. Pr(A and B)=Pr(A)+Pr(B) 5. .4207 = Pr(X < 130) = Pr(Z < -.20) 6. .096 = Pr(145 < X < 175) = Pr(1.3 < Z < 3.3) = .99952-.9032
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Unformatted text preview: 7. 125.3 = (10)(-.67)+132 8. 2.10 = (.2)(-2)+(.4)(0)+(.3)(5)+(.1)(10) 9. 3.727 = sqrt(var) var = 13.89 10. .655 = .30+.52-(.55)(.30) 11. .067 = 1 - Pr(X =< 1.5) = exp(-(1.2)(1.5)(1.5)) = exp(-2.7) 12. .227 13. 2.667 14. Pr(X=2)=0 15. 22/170 16. 70/100 17. 100/170 18. .0956 = 1 - (.99)^10 19. 1/18 20. Pr(X =< t) = 1 - Pr(X > t)...
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This note was uploaded on 01/16/2012 for the course ST 370 taught by Professor Nail during the Spring '08 term at N.C. State.

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