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    Examining the Confidence Intervals for Two Populations

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    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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    https://brainmass.com/statistics/sampling/examining-confidence-intervals-two-populations-259476

    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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