Can someone please help me??

Events M and N have probabilities such that P(M)=.4, P(N)=.28. P(M U N)=.56, and P(M n N)=.12 Are events M and N independent?

A No, because P(M)-P(N)=P(M n N)
B no, because P(M) times P(N) is not equal to P(M n N)

C yes because P(M)+P(N)= P(M U N)
D yes because P(M) times P(N) is not equal to P(M U N)

Question

Can someone please help me?? 

Events M and N have probabilities such that P(M)=.4, P(N)=.28.    P(M U N)=.56, and P(M n N)=.12        Are events M and N independent?

A No, because P(M)-P(N)=P(M n N)
B no, because P(M) times P(N) is not equal to P(M n N)

C yes because P(M)+P(N)= P(M U N)
D yes because P(M) times P(N) is not equal to P(M U N)

superhelp101 · Answer

Anyone I am stuck any help?

anonymous · Answer

they are independent if $$\frac{P(M\cap N)}{P(N)}=P(M)$$

anonymous · Answer

or if 
$$P(M)P(N)=P(M\cap N)$$

superhelp101 · Answer

ohh okay I see let me agree on a answer and I will check with you to verify

superhelp101 · Answer

my problem has $$\neq $$ in it

superhelp101 · Answer

not and equal sign tho

anonymous · Answer

yes, they are not equal, so they are dependent

superhelp101 · Answer

okay so the second choice would make sense am i right