Question

given that P(A) = .4, P(B) = .8, and P(A and B) = .40; determine P(A/B) ***the / is a straight line in the problem, not slanted

Answer 1

p(A|B) = p(A and B)/p(B)

Answer 2

so the answer is .5?

Answer 3

yes

Answer 4

yay! thank u so much! can u help me with another one?

Answer 5

will try

Answer 6

ok thanks, it is... if P(A or B) = .06, P(A) = .03, and P(B) = .07; determine P(A and B)

Answer 7

P(A or B) = P(A) + P(B) - P(A and B)
So
P(A and B) = P(A) + P(B) -P(A or B)

Answer 8

so .04?

Answer 9

right

Answer 10

cool, thanks a bunch