Question: Referring to the random variables whose joint probability distribution is given in Exercise 3.51 on page 126, find the mean 2 X Y 2 X

Referring to the random variables whose joint probability distribution is given in Exercise 3.51 on page 126, find the mean 2

X Y 2

X Y for the total number of jacks and kings when 3 cards are drawn without replacement from the 12 face cards of an ordinary deck of 52 playing cards.

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