Jump to level 1 A biased coin comes up heads with probability CT / N and tails with probability The coin is flipped 3 times. For every flip that comes up heads, you win 4 dollars. For every flip that comes up tails, you lose 7 dollars. D is the random variable that is equal to your net gain in dollars. If you lose 2 dollars, then D = -2. What is the expected value of D? ED = Ex: 1.23 +