1. A(2, 3), B(1, 5)
2. C(-6, 1), D(2, 1)
3. E(3, 0), F(5, 0)
4. G(-1, -3), H(-2, -5)
5. I(6, 7), J(11, 1)
6. K(5, 3), L(5, -2)
7. M(10, 2), AND(-3, 5)
8. O(6, 2), P(1, 7)
9. Q(5, 8), R(3, 2)
10. S(1, 7), T(3, 8)
11. U(4, 1), V(5, 2)
12. W(3, 2), X(7, 1)
13. Y(0, 5), Z(2, 1)
14. A(6, 5), B(3, 5)
15. C(2, 1), D(7, -1)

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

Ineed me i stuck and i don’t want to get it wrong

3.17 scores on stats final. below are final exam scores of 20 introductory statistics students. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 57, 66, 69, 71, 72, 73, 74, 77, 78, 78, 79, 79, 81, 81, 82, 83, 83, 88, 89, 94 (a) the mean score is 77.7 points. with a standard deviation of 8.44 points. use this information to determine if the scores approximately follow the 68-95-99.7% rule. (b) do these data appear to follow a normal distribution? explain your reasoning using the graphs provided below.