Question

The probability of event A is x, and the probability of event B is y. If the two events are independent, which of these conditions must be true?
A. P(B|A) = y
B. P(A|B) = y
C. P(B|A) = x
D. P(A and B) = x + y
. P(A and B) = x

P(A) y

Answer 1

If A and B are dependent events,
and A occurs first,
P(A and B) = P(A) • P(B,once A has occurred)
... and is written as ...
P(A and B) = P(A) • P(B|A)

Answer 2

P(B|A): Probability of B, when A has happened

Answer 3

but A and B are independent though

Answer 4

yes. if they are INdependent, that means it doesn't matter which on is first, or if there even will be an "A" .

Answer 5

A. P(B|A) = y
B. P(A|B) = y
C. P(B|A) = x

let's examine what the options would translate into

Answer 6

so is it P(B|A) = y

Answer 7

A. P(B|A) = y
Probability of B, (when A has happened),
is y

Answer 8

"the probability of event B is y"

yeah, that one would work :)

Answer 9

B. P(A|B) = y

A is y
WRONG

Answer 10

C. P(B|A) = x

B is x
WRONG

Answer 11

you had the right one

Answer 12

thank you :)

Answer 13

yw ;)

Answer 14

its d