A sociologist, Sal Sociological, wants to determine if the life expectancy of people in Africa is less than the life expectancy of people in Asia.

A sociologist, Sal Sociological, wants to determine if the life expectancy of people in Africa is less than the life expectancy of people in Asia.  He collects data from a sample of individuals and the resulting data is shown below.  Calculate a 95% confidence interval for the difference in life expectancy between Africa and Asia.

Africa:  = 56.3 years

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