Question

If A and B are dependent events, which of these conditions must be true?

P(A and B) = P(A) + P(B)

P(A and B) = P(B)
P(A)

P(B|A) = P(B)
P(A|B) = P(A)
P(B|A) P

Answer 1

@YanaSidlinskiy

Answer 2

Have you tried it on your own?

Answer 3

I feel that it is A but I am not sure :/

Answer 4

Sorry for long replies...I'm having technical issues right now. But do you see where I'm going with this, right?
If A and B are dependent events and A happens first you'd get something like this:
P(A, B) = P(A) • P(B when A has happened)
Which will give you:
P(A , B) = P(A) • P(B|A)

Answer 5

is there supposed to be a fraction bar on choice b)

Answer 6

I'm kind of lost. The independent and dependent questions throw me off.

Answer 7

Yes perl a fraction bar on all choices

Answer 8

is it B?

Answer 9

I kind of gave you an answer....

Answer 10

P ( A and B ) = p(A) * P(B)?

Answer 11

Perl, What do you think?

Answer 12

Sorry if it's really confusing you. I'm really not sure how to explain it to you....I'm not great at explaining but here's like something you should do to eliminate your options down:
P(A|B) = y
A is y
WRONG

P(B|A) = y
Probability of B, (when A has happened),
is y
"the probability of event B is y"

Answer 13

C?

Answer 14

can you post the question with fraction bars?

Answer 15

I want to be sure I am reading this correctly .

Answer 16

this is what i see
If A and B are dependent events, which of these conditions must be true?

P(A and B) = P(A) + P(B)

P(A and B) = P(B)
P(A)

P(B|A) = P(B)
P(A|B) = P(A)
P(B|A) P