Homework SourseA sociologist wants to determine if the life expectancy of p
A sociologist wants to determine if the life expectancy of people in Africa is less than the life expectancy of people in Asia. The data obtained is shown in the table below.
Calculate the critical value. Use = 0.05.
-1.65
-2.33
-2.58
-1.96
| Africa | Asia |
| Xbar1 = 63.3 yr. | Xbar2 = 65.2 yr. |
| 1 = 9.1 yr. | 2 = 7.3 yr. |
| n1= 120 | n2 = 150 |
Solution
