A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
the results of a medical test show that of 32 people selected at random who were given the test, 2 tested positive and 30 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.
anonymous
 one year ago
the results of a medical test show that of 32 people selected at random who were given the test, 2 tested positive and 30 tested negative. Determine the odds in favor of a person selected at random testing positive on the test.

This Question is Closed

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1The odds are the ratio of the probability of an event occurring to that of its not occurring. What is the experimental probability of a randomly tested person testing positive?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you lost me with that last part.

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1The experimental probability of a randomly tested person testing positive is given by: \[\large \frac{number\ testing\ positive}{total\ number\ tested}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be as simple as 2/64?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0then simplify it obviously

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Where did '64' come from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0crap so it would just be "32" sorry insomnia is setting in!

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Yes, the experimental probability of a randomly tested person testing positive is 2/32. Next step: What is experimental probability of a randomly tested person testing negative?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so it would be 30/32?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Correct. So looking at the definition of odds: 'The odds are the ratio of the probability of an event occurring to that of its not occurring.' So an initial result for the required odds in favor of a person selected at random testing positive on the test is: 2/32 : 30/32 which can be simplified. Can you simplify it?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1The aim is to simplify \[\large \frac{2}{32}:\frac{30}{32}\] to get an integer on each side.

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1Multiply each term by 32/2

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1\[\large (\frac{2}{32}\times\frac{32}{2}):(\frac{30}{32}\times\frac{32}{2})=?\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Sorry I was reading the book and it gave me a weird formula I was trying to wrap my head around based on what we were working on

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0it should be 1:15 if I did my math right

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Theres a formula for odds in favor, the way you just walked out, is that the same process?

kropot72
 one year ago
Best ResponseYou've already chosen the best response.1If the probability of an event A occurring is P(A) and the probability of event A not occurring is \[\large P(\bar{A})\] then the odds in favor of event A is given by \[\large P(A):P(\bar{A})\] This is the method that I used.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0awesome, ok I think I have it. up for helping me with a couple more?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.