3. The principal is randomly choosing 4 applicants for an advisory committee. Five grade-9, nine grade-10, seven grade-11, and four grade-12 students apply. a) Show the probability distribution for the number of grade-12 students on the advisory committee. Round P(x) values to 4 decimal places. (3] Calculation P(x) b) Display the above probability distribution graphically. Round your values to 2 decimal places for the graph. [2] c) What is the probability that there will be at least 3 grade-12 students on the committee