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    Independent sample t test for comparing means

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    Consider the following results for two samples randomly taken from two populations.
    Sample A Sample B
    Sample Size 150 150
    Sample Mean 412 405
    Sample Std Deviation 128 54

    A. At a .01 level of significance, test whether there is a difference between the 2 sample means.

    b. Construct a 99 percent confidence interval estimate of the difference between the two sample means.

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    https://brainmass.com/statistics/students-t-test/independent-sample-test-comparing-means-248992

    Solution Preview

    Significance Test
    Consider the following results for two samples randomly taken from two populations.
    Sample A Sample B
    Sample Size 150 150
    Sample Mean 412 405
    Sample Std Deviation 128 54

    A. At a .01 level of significance, test whether there is a difference between the 2 sample means.
    H0: µ1 =µ2
    H1: µ1≠µ2
    Test ...

    Solution Summary

    The solution provides step by step method for the calculation of independent sample t test . Formula for the calculation and Interpretations of the results are also included.

    $2.19

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