13.6 This is chance Strategy and choice problem . These are the all information that I have

13.6 Consider the following yes-no voting system with voters P1, P2, P3, PA. P, and winning coalitions: P1,P3 P1, P2. PA PI. P2 P2. P3 P1.P2. P3 P1.P2, Ps P1,P3, PA P1.P3, P.s P2, P3, PA. P2, P3. Ps P1, PA, Ps P1, P2, P3, PA P1, P2, PA, Ps P1, P3, PA, Ps P2. P3, PA, Ps P1,P2, P3, PA. Ps Prove that this is a weighted voting system by finding quota and weights. Compute the power index for this voting system