{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

hw6-4 - Math 1160 Section 6.4 Answer Key 8 Sample Space =...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Math 1160 – Section 6.4 Answer Key 8. Sample Space = 11 balls barb2right 6 White and 5 Red Sample Size = 4 balls selected at random Event = 2 white balls and 2 red balls C(6,2) x C(5,2) = 15 x 10 = 150 = 5 C(11,4) 330 330 11 11. This is set up the same as the numbered marble problem. Sample Space = 22 children barb2right 12 boys and 10 girls Sample Size = 7 children Event = At least 2 girls are chosen 2G5B or 3G4B or 4G3B or 5G2B or 6G1B or 7G0B C(10,2)xC(12,5) + C(10,3)xC(12,4) + C(10,4)xC(12,3) + C(10,5)xC(12,2) + C(10,6)xC(12,1) + (10,7)xC(12,0) C(22,7) (45 x 792) + (120 x 495) + (210 x 220) + (252 x 66) + (210 x 12) + (120 x 1) = C(22,7) 35640 + 59400 + 46200 + 16632 + 2520 + 120 = 160512 = 16 170544 170544 17 12. This is set up the same as the numbered marble problem. Sample Space = 22 children barb2right 12 boys and 10 girls Sample Size = 7 children Event = More boys than girls are chosen 4B3G or 5B2G or 6B1G or 7B0G C(12,4)xC(10,3) + C(12,5)xC(10,2) + C(12,6)xC(10,1) + C(12,7)xC(10,0) C(22,7) (495 x 120) + (792 x 45) + (924 x 10) + (792 x 1) = C(22,7) 59400 + 35640 + 9240 + 792 = 105072 = 199 170544 170544 323
Image of page 1

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

View Full Document Right Arrow Icon
13. This is set up the same as the numbered marble problem.
Image of page 2
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