A sociologist expects the life expectancy of people in Africa is different than the life expectancy of people in Asia. The data obtained is shown in the table below. Determine the 95% confidence interval for the difference in the population means (Africa-Asia). Hint: Treat the 2 sample z interval in the same way as a 2 sample t interval but with infinite degrees of freedom Africa Asia *1 =55.1 yr. 72=65.4 yr. 31 -7.7 yr. 52=9.4 yr. 121-52 72=47