## ashontae19 one year ago can anyone help me i will give a medal!!

1. anonymous

2. ashontae19

3. kropot72

Just to confirm your understanding, can you complete the definition of independence: $\large P(A \cap B)=?$

4. ashontae19

yes

5. kropot72

What is the right hand side of the definition? Please post it here.

6. ashontae19

=0.75

7. ashontae19

for the first one correct?

8. kropot72

I think you should post the definition of independence of events A and B before we continue.

9. kropot72

The definition of independence is as follows: Events A and B are independent if and only if$\large P(A\cap B)=P(A) \times P(B)$ Using this definition, are the events in 1a independent?

10. kropot72

It appears from your answers that either you are guessing or you do not understand the definition of independence (or both).

11. ashontae19

Im not guessing thats the answers i got

12. kropot72

Well how did you get the answer 'dependent' for 1a ?

13. ashontae19

.45(30)=.135 that cancels out .75 so its not independent

14. kropot72

The correct explanation for 1a is as follows: P(A) = 0.45 P(B) = 0.3 If events A and B were independent $\large P(A) \times P(B)=0.135$ However A intersection B = 0.75, therefore the events are dependent.

15. ashontae19

can you help me on two more

16. kropot72

Sorry, i have to log out now. I hope I have helped you.