### Joint and marginal probabilities for a sample from a deck of cards

You have a standard deck of cards and you take out 2 cards at random. Let Y1 represent the number of red Queens in your sample and let Y2 represent the number of spades in your sample. a) calculate p. it is mean p(Y1, Y2); b) calculate var (Y1I Y2=1) c) Determine E (Y2I Y1=0)