A person with type b blood can receive a transfusion

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
A person with type B blood can receive a transfusion from someone with type B or type O blood. What’s the chance of being able to receive a transfusion if you have type B blood? P(B or O) = P(B) + P(O) {because they are disjoint} = .11 + .45 = .56 b. Select two people at random. What is the chance they both have type B blood? P(B 1 and B 2 ) = P(B 1 ) x P(B 2 ) = (.11)(.11) = .0121 c. Select two people at random. What is the chance they both have the same blood type? P(both O) + P( both A) + P(both B) + P(both AB)
Image of page 1

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

View Full Document Right Arrow Icon
Independent = P(O)P(O) + P(A)P(A) + P(B)P(B) + P(AB)P(AB) = (.45) 2 + (.40) 2 + (.11) 2 + (.04) 2 = .3762 d. Select two people at random. What is the chance that one has type A blood and the other has type B blood? P(A 1 and B 2 ) + P(B 1 and A 2 ) = P(A)P(B) + P(B)P(A) = (.40)(.11) + (.11)(.40) = .088 e. Select two people at random. What is the chance that exactly one has type A blood? P(A 1 and not A 2 ) + P(not A 1 and A 2 ) = P(A)P(not A) + P(not A)P(A) = (.4)(.6) + (.4)(.6) = .48 Problem 3 The following table lists the joint probabilities associated with having a fast car and the number of speeding tickets in the last 6 months. Suppose we select a car owner at random from this sample. Are owning a fast car and getting more than 1 speeding ticket independent? Use probabilities and show your work.
Image of page 2
Image of page 3
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