+0  
 
0
271
3
avatar+117 

Two cards are drawn without replacement from a standard deck of 52 cards. What is the probability that one of the cards is a 7 and the other is a 3, and are these events independent?

 4/663; no, they are dependent events

1/16 ; yes, they are independent events

8/663 ; no, they are dependent events

 1/169; yes, they are independent events

 

I know it's not C, I'm not sure how to even start. I'm saying all of this which I didn't think was needed, I thought it was implied that I'm asking for help and not just answers for Melody. Sorry if I offended you in some way.

failurewithasmile  Apr 15, 2017
 #1
avatar+87301 
+1

We could draw the 3 first and then the 7.....or we could draw the 7 first and then the 3....so...

 

P(drawing the first card) =  4/52  .....P(drawing the second card)  = 4/51

 

And we can do this in 2 ways  "7" first and then "3"  or vice-versa

 

2 (4/52) (4/51)   = 2(1/13)(4/51)  =  8/663

 

These are definitely dependent events

 

 

 

cool cool cool

CPhill  Apr 15, 2017
 #2
avatar+117 
0

Thank you, that's what I got last time but it says it was wrong.

failurewithasmile  Apr 15, 2017
 #3
avatar+92781 
+1

 CPhill's logic is correct :)

Melody  Apr 15, 2017

9 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.