1. Choose the best interpretation based on the the following 95%CIs around the mean ofagefor parents and childless adults:

Parents: (50.79, 51.39)

Childless: (37.52, 38.47)

		We are 95% confident that there isnoage difference between parents and childless Americans.
		Childless Americans are older,on average,than parents.
		We are 95% confident that Americans with children are younger,on average, than those without children.
		We are 95% confident that childless Americans are younger,on average, than parents.

2. Choose the best interpretation based on the the following 95%CIs around the proportion for childlessness for males and females:

Males: (.32, .34)

Females (.22, .23)

		We are 95% confident that 34% of males and 23% of females in America do not have children.
		We are 95% confident that the proportions of males and females in America who do not have children are different from each other
		We are 95% confident that there is no difference in the population proportions of males and females who are childless
		We are 95% confident that women are more likely to be childless than men