In a large population, about 20 % prefer having a pet bird to having a pet cat. A researcher takes a random sample of 25 people and surveys whether they prefer birds. Use the binomial distribution to compute the probability that exactly 8 of the people in the sample prefer birds. To show your answer: Move the dots to plot the coordinate for the probability of success, p , first and the number of trials, n , second. Use the dot on the x -axis to represent the number of successes and display the probability.