19. Example 12.4 and the table below provide the results of a study in Australia showing that the couples in the study had a higher risk of separation if the wife's parents had been divorced. The numbers are shown again in the table below.

Wife's Parents Divorced?	Couple Separated	Couple Intact	Total
Yes	42	292	334
No	72	1,092	1,164
Total	114	1,384	1,498

1. What is an appropriate null hypothesis for this situation.

a)The entire population of Australian couples where the wife's parents' are divorced are now separated.

b)Less than half of the population of Australian couples where the wife's parents' are divorced are now separated.

c)For the population of Australian couples similar to the ones in the study, there is no relationship between wife's parents' divorce status and the couple's separation status.

d)For the population of Australian couples similar to the ones in the study, there is a relationship between wife's parents' divorce status and the couple's separation status.

e)More than half of the population of Australian couples where the wife's parents' are divorced are now separated. 2. What is an appropriate alternative hypothesis for this situation.

a)The entire population of Australian couples where the wife's parents' are divorced are now separated.

b)Less than half of the population of Australian couples where the wife's parents' are divorced are now separated.

c)For the population of Australian couples similar to the ones in the study, there is no relationship between wife's parents' divorce status and the couple's separation status.

d)For the population of Australian couples similar to the ones in the study, there is a relationship between wife's parents' divorce status and the couple's separation status.

e)More than half of the population of Australian couples where the wife's parents' are divorced are now separated.