# (). (a) Find cov(W, X) fr W and % delin(xl in I'roblemi l (b) The joint...

###### Question:

(). (a) Find cov(W, X) fr W and % delin(xl in I'roblemi l (b) The joint density of random variables X and Y is 0, elsewhere.
① Two cards are randomly drawn without replacement) from an ordinary deck of 52 play- ing cards. Let W be the number of aces obtained in the first draw, and Z be the number of pairs obtained in the two draws. a) Find the joint probability mass function of W and Z b) Are W and Z independent? Please justify your answer

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