Question 7: Jenson is going to choose a ball at random from a bag and then flip a coin. There are 5 balls in the bag, 2 white and 3 black. A ball is picked at random from the bag and its colour is recorded. If the ball is white, a fair coin is flipped. If the ball is black, a biased coin is flipped, where heads has a probability of % (a) Draw a tree diagram to show this information Jenson selects a ball and flips the appropriate coin. (b) Find the probability that he obtains a tail.