In each of 12 races, the Democrats have a 60% chance of winning. Assume the races are independent of each other. Round your answers to three decimal places. a. What characteristics of this scenario indicate that you are working with Bernoulli trials? (3 points) b. What is the mean and standard deviation of the number of races won? (3 points) c. What is the probability that the Democrats will win the 7th race? (1 point) d. What is the probability that the Democrats will win all 12 races? (2 points)