Homework Answers for Chapter 5: Exercises 24, 25, 26, 30, 31, 32, 34, 38, 40, 42
24. a.
b.
25.
26.
28. a. 0.1465
b. 0.2381
c. 0.7619
30. a. 0.1353
b. 0.8647
31.
32. 0.8088
34.
38. a. 0, 1, 2, 3
b. Number of Minority Probability
0 0.1667
1 0.5000
2 0.3000
3 0.0333
c. 0.5, 0.8333, 0.3333
d.
s = 0.7483
40. The probability of exactly two Spanish-speaking Americans on the jury is 0.168 (Appendix A, n = 12, p = 0.3, and x = 2). One might argue that this is a sufficiently large chance and agree with the government lawyer.
42. a.
b. 0.410, using Appendix A, n = 4, x = 1, p =0.20
c. 0.3595 found by m = np = 4(0.2) = 0.8, x = 1
d. The answers vary because of the different assumptions.