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    T-Test for Dependent Samples

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    Big Time Software Co. has developed a new version of it XD-3 software. They want to determine if the new version of XD-3 is faster then the old version. In a matched sample test they obtained the following results.

    Tester Old Version New Version
    1 2.6 2.8
    2 4.0 5.3
    3 3.8 2.9
    4 1.8 1.1

    A. What is the Null and Alternate hypothesis statement for the matched test?
    -
    B. What is the average difference (D) for the problem?

    C. What is the standard deviation for the matched test?

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    https://brainmass.com/statistics/students-t-test/test-dependent-samples-309042

    Solution Preview

    Null Hypothesis: The new version of XD-3 is not significantly faster ...

    Solution Summary

    This solution is comprised of detailed step-by-step calculations and analysis of the given problems related to Statistics and provides students with a clear perspective of the underlying concepts. The expert provides the solution in an Excel file.

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