Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

NoelGreco

  • 3 years ago

A class is given a list of 20 study problems from which 10 will be part of an upcoming exam. If a given student knows how to solve 15 of the problems, find the probability that the student will be able to answer: a. all ten questions on the exam b. exactly eight questions on the exam c. at least 9 questions on the exam

  • This Question is Open
  1. Spacelimbus
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I think this can be considered as a Bernoulli Trial. In that case, you could say that the student is in p=3/4 right and in p=1-p=1/4 false. This are of course only initial conditions, if I understand the problem correctly.

  2. NoelGreco
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    For a. I got (15C10)/20C10 b. (15C8)X(5C2)/(20C10) Both are correct. C has me stumped.

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy