It is known empirically that 49% of the children born in Canada are girls (and 51% boys). Let N=number of children who will be born in Canada in September of this year, and assume that N is a Pois(1) random variable, where 1 is known. Assume that the births are independent (i.e. no twins) Let X be the number of girls born in Canada in September. And Y be the number of boys who will be born then. a) Find the joint distribution of X and Y. b) Find E (N|X) and E (NZ[X) (The answers will be r.v.s)