Practice Midterm 2 WI 10 Solutions

Note that pnot a 1 pa 1 4 6 pat least 1 a 1 pno as 1

Info icon This preview shows pages 7–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Note that P(not A) = 1 – P(A) = 1 - .4 = .6 P(At least 1 A) = 1 – P(no A’s) = 1 – P(not A)^ 2 = 1 – (.6)^2 = 0.64 OR P(At least 1 A) = P(AA or AB or AC or BA or CA) = P(AA) + P(AB) + P(AC) + P(BA) + P(CA) = (0.4)(0.4) + (0.4)(0.35) + (0.4)(0.25) + (0.35)(0.4) + (0.25)(0.4) = 0.64 ANS____ 0.64 ____ 30. What is the chance that neither one got an A? P(Neither has an A) = 1 – P(At least 1 A) = 1 – 0.64 = 0.36 ANS__ 0.36 ________ 7
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
ANSWER SHEET MC AND TF SOLUTIONS Stat 133 Midterm 2 WI 2010 THESE REPRESENT YOUR FINAL ANSWERS! BLANKS WILL RECEIVE 0 POINTS. 1. A B C D 2. A B C D 3. A B C D 4. A B C D 5. A B C D 6. A B C D 7. A B C D 8. A B C D 9. A B C D 10. A B C D 11. A B C D 12. A B C D 13. A B C D 14. A B C D 15. A B C D 16. A B C D 17. A B C D 18. A B C D 19. A B C D 20. A B C D 8
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern