A. True/False; multiple choice questions:

1. a.
2. b.
3. b.
4. c.
5. b.
6. c.
7. b.
8. e.
9. c.
10. b.
11. e.
12. b.
13. c.
14. d.
15. e.
16. b.
17. b.
18. b.
19. a.
20. d.

B. Match and Identify:

See glossary in texts and notes for definitions.

C. Short Problems:

1b. Probability that Brad is a carrier is 2/3.
1c. Probability that 1st child will be affected is 1/9.

2a. The sex ratio does deviate significantly from a 50:50 ratio. With one degree of freedom, the chi square value is 4.5.
2b. If color is independent of sex in this sample, we would expect equal numbers of red and gray males and equal numbers of red and gray females (i.e. expect 4 classes- 42.5 red males, 42.5 gray males, 57.5 red females, 57.5 gray females.) This also deviates significantly from the observed results (chi square value is 8.1; with 3 degrees of freedom).