Academic Integrity: tutoring, explanations, and feedback — we don’t complete graded work or submit on a student’s behalf.

20. Taurig and Sue-Ellen have been married for 27 years and they have nineteen b

ID: 23166 • Letter: 2

Question

20. Taurig and Sue-Ellen have been married for 27 years and they have nineteen beautiful sons. Sue-Ellen really wants a daughter to wear the wedding dress that her mother, Quin, made for her. The chance that their next child will be a girl, assuming that the law of independence holds is:

a. (1/2)28
b. 1/2
c. (1/3)27
d. 228
e. 1/5

21. The fraction of nineteen child families which are all male is
a. (1/2)19 b. 1/2 c. 219 d. 6 e. 5/19

22. Under normal conditions the expected sex ratio in humans is 1:1, 50:50 or 1/2 : 1/2. The chi-square associated with Taurig and Sue-Ellen's little family, under this hypothesis is:
a. 4576.45 b. 19 c. 3.84 d. 6.78 e. 0.0

23. The probability that sex determination is normal for this couple may be:
a. accepted as consistent with the data.
b. rejected with a probability of less than .05 that a true hypothesis is being rejected.
c. absolutely rejected
d. a & b
e. a & c

Sorry that I put four questions but since they all pertained to each other it might not make sense if I were to split them up. I would appreciate any help, thanks!!!

Explanation / Answer

a. (1/2)^28 a. (1/2)^19 c. 3.84 c. absolutely rejected