Question: Referring to the random variables whose joint probability distribution is given in Exercise 3.51 on page 106, find the mean for the total number of

Referring to the random variables whose joint probability distribution is given in Exercise 3.51 on page 106, find the mean 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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