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posted by  r3dd on 5/17/2008 2:27:42 AM  |  status: Live  

Statistics & Probability-c

Course Textbook Chapter Problem
Statistics and Probability Statistics (4th) by Freedman, Pisani, Purves N/A N/A
Question Details:

Two card are selected at random from a pack of 52 cards. What is the probability that second is a card of king, if it is known that first card is (i) red card (ii) diamond card (iii) spade or diamond (iv) picture card?

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posted by gongalla on 5/17/2008 7:19:57 AM  |  status: Live
Asker's Rating: Helpful   
r3dd's comment:
"thnX "
Response Details:
 
1)     Let A = getting a red card.
     n(A) =   (in which no of king cards are 2.)   
       Let B = getting a king card ,
    n(B) = 2  (after A happned).
 
Therefore P(B) = .
 
2)       Let A = getting a diamond card.
     n(A) =   (in which no of king cards are 1.)   
       Let B = getting a king card ,
    n(B) = 1  (after A happned).
 
Therefore P(B) =
 
3). Let A = getting a spade or diamond card.
     n(A) =   (in which no of king cards are 2.)   
       Let B = getting a king card ,
    n(B) = 2  (after A happned).
 
Therefore P(B) =
 
4)  Let A = getting a picture card.
     n(A) =   (in which no of king cards are 4.)   
       Let B = getting a king card ,
    n(B) = 4 (after A happned).
 
Therefore P(B) =
 
Hope this will help U
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