Any math wiz here? Need help with a problem.

[eakers]

you changed the question, gimme a second.

 

[eakers]

Originally posted by: lager
One more stats question.

How do I figure out "A intersect B" and "B intersect C" if the given are P(A) = .4 and P(B) = .8 and P(C) = .4 ?? Thanks.

do you know any more information?

 

[Lager]

I think to figure out A intersect B is P(A) x P(B)??

 

[Lager]

Originally posted by: eakers

Originally posted by: lager
One more stats question.

How do I figure out "A intersect B" and "B intersect C" if the given are P(A) = .4 and P(B) = .8 and P(C) = .4 ?? Thanks.

do you know any more information?

The possible sample is 5.

 

[eakers]

i still dont see how you can even get the intersection from that information. does it say whatt kind of events a, b and c are? does it say if they are contained in eachother?

(i'm not a stats person, just math. its been a while since ive done stats so im a bit fuzzy on it)

 

[Lager]

Originally posted by: eakers
i still dont see how you can even get the intersection from that information. does it say whatt kind of events a, b and c are? does it say if they are contained in eachother?

(i'm not a stats person, just math. its been a while since ive done stats so im a bit fuzzy on it)

More breakdown.

A: E1, E3 P(A) = .4
B: E1, E2, E4, E5 P(B) = .8
C: E3, E4 P(C) = .4

I hope that helps. What I'm looking for is A (upside down U or intersection) B and B (intersection) C.

 

[eakers]

ok, my answer is below.

 

[eakers]

Originally posted by: lager

Originally posted by: eakers
i still dont see how you can even get the intersection from that information. does it say whatt kind of events a, b and c are? does it say if they are contained in eachother?

(i'm not a stats person, just math. its been a while since ive done stats so im a bit fuzzy on it)

More breakdown.

A: E1, E3 P(A) = .4
B: E1, E2, E4, E5 P(B) = .8
C: E3, E4 P(C) = .4

I hope that helps. What I'm looking for is A (upside down U or intersection) B and B (intersection) C.

a intersect b = e1
b intersect c = e4

(are the e's the members of a, b and c?)

 

[Lager]

Originally posted by: eakers

Originally posted by: lager

Originally posted by: eakers
i still dont see how you can even get the intersection from that information. does it say whatt kind of events a, b and c are? does it say if they are contained in eachother?

(i'm not a stats person, just math. its been a while since ive done stats so im a bit fuzzy on it)

More breakdown.

A: E1, E3 P(A) = .4
B: E1, E2, E4, E5 P(B) = .8
C: E3, E4 P(C) = .4

I hope that helps. What I'm looking for is A (upside down U or intersection) B and B (intersection) C.

a intersect b = e1
b intersect c = e4

(are the e's the members of a, b and c?)

Yes. What I'm looking for is the answer in probability term or in percentage.

 

[eakers]

a intersect b = 1/5 = divide it out on your calculator