Determine

n(A)
n(B)
P(A)
P(B)
P(A|B)
P(B|A)

Question

Determine

n(A)
    n(B)
    P(A)
    P(B)
    P(A|B)
    P(B|A)

anonymous · Answer

its a Venn Diagram..
40 is A in one circle  80 is B in another one. and 10 in Both..

amistre64 · Answer

like this?

anonymous · Answer

yea...:)

anonymous · Answer

so i have to determine the following i posted..

amistre64 · Answer

total is 130; for the probability stuff

anonymous · Answer

would that be the one that have a P in front of them?

amistre64 · Answer

yes :)

n(A) = 40+10 = 50
n(B) = 80 + 10 = 90

P(A) = 50/130
P(B)  = 90/130
P(A|B) = ? 
P(B|A) = ?

A given B terminaology I gotta look up to refresh meself

anonymous · Answer

are you a ex teacher? cuz you seem to know your stuff great.

amistre64 · Answer

im a student, getting my degree in math :)

$$P(B|A)=\frac{P(AnB)}{P(A)}$$

anonymous · Answer

thats kewl. :)

anonymous · Answer

I am going to school for cyber crime investigator and I HAVE to take these math classes.. which I am completely STUPID in..

amistre64 · Answer

P(AnB) = 10/130

P(B|A) =  10/130
             -------- = 10/50
              50/130

P(A|B) = P(AnB)/P(B) = 10/90

amistre64 · Answer

well, you might wanna reduce these fractions :)

n(A) 50
n(B) 90

P(A) 5/13
P(B) 9/13

P(A|B) 1/9
P(B|A) 1/5

anonymous · Answer

ok