Consider the sample space of outcomes of two tosses of a fair coin On that space define the following random variables: X= 2X the number of heads; Y=5x the number of tails For these variables compute ?XY Solution b) P(no heads)= 1/8 (c) P(exactly one head)= 3/8 (d) P(exactly two heads)= 3/8 (e) P(three heads)= 1/8.