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Determine the 95% confidence interval for two differences mean.
Determine the 95% confidence interval of the true difference in the means. 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. Use α = 0.05 .
Africa
Asia
55.3
65.2
s
8.1
9.3
n
53
42
A) -13.46 < μ 1 -μ 2 < -6.34
B) -16.33 < μ 1 -μ 2 < -5.98
C) -12.16 < μ 1 -μ 2 < -6.86
D) -11.35 < μ 1 -μ 2 < -7.58
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