Examining the Confidence Intervals for Two Populations
Consider the result in the following table for two random sample taken from two populations:
Sample 1
n1 = 50

x = 22
σ1 = 4
Sample 2
n2=35

x2 = 14
σ2= 5
a) provide a 90% confidence interval for difference between the two population means.
b) provide a 97% confidence interval for the difference between the two population means.
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Solution Preview
Consider the result in the following table for two random sample taken from two populations:
Sample 1
n1 = 50

x = 22
σ1 = 4
Sample 2
n2=35

x2 = 14
σ2= 5
a) provide a 90% confidence interval for difference between the two population means.
Given n1=50, xbar1=22, ...
Solution Summary
The solution examines the confidence intervals for two populations. A 90% and 97% confidence interval for the difference is provided.
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