A community for students.
Here's the question you clicked on:
 0 viewing
mariomintchev
 2 years ago
Stats Question
Real estate ads suggest that 63% of homes for sale have garages, 21% have pools, and 18% have both features. What is the probability that a home for sale has:
a) A pool or garage?
b) Neither a pool or garage?
c) A pool but no garage?
mariomintchev
 2 years ago
Stats Question Real estate ads suggest that 63% of homes for sale have garages, 21% have pools, and 18% have both features. What is the probability that a home for sale has: a) A pool or garage? b) Neither a pool or garage? c) A pool but no garage?

This Question is Closed

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0For a I have to use the formula: P(A) + P(B)  P(A n B) =

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0Yeah, my teacher drew that out for us today. I don't really get what goes in the formula for part a though.

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1So the entire garage circle is 63% and the entire Pool circle is 21%. But these two percentages also contain the percentage of houses which have both. So you should add together the 63% and the 21%, and subtract the 18%, which is the intersection of A and B.

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0yeah i see that now.

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0for b, do i take 37 + 79 and then subtract 82?

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1I think you should just take the complement of your answer to A.

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.166% of houses have either a pool or a garage, so (10.66) = 0.44 will have none of these.

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0i am given this formula though: P(A)=1P(A^c)

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1Yeah, so 1P(A)' = P(A), and this works the other way. 1P(A) = P(A)'

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0it's 0.34. you subtracted wrong.

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1Haha oh dear, more coffee required. Sorry. Do you get the idea though?

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0yeah, i'm getting it slowly but surely. this is my first time taking stats and i just started, so i'm getting used to it.

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1My advice is to get the hang of drawing those Venn Diagrams. They are really helpful.

mariomintchev
 2 years ago
Best ResponseYou've already chosen the best response.0can you help me with part c too?

Polrek
 2 years ago
Best ResponseYou've already chosen the best response.1This area, right? dw:1346194888234:dw
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.