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    Paired two sample t-test

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    An Excel Spreadsheet is reprinted below. Interpret the t-test results. Are they statistically significant?

    t-Test: Paired Two Sample for Means
    Beer Soda

    Variable 1 Variable 2
    Mean 16.83333333 15.8
    Variance 10.35057471 7.820689655
    Observations 30 30
    Pearson Correlation 0.264451682
    Hypothesized Mean Difference 0
    df 29
    t Stat 1.545410551
    P(T<=t) one-tail 0.06654553
    t Critical one-tail 1.699127097
    P(T<=t) two-tail 0.13309106
    t Critical two-tail 2.045230758

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    The results are considered significant when the p-value is less than 0.05.

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    Solution Summary

    Understanding and Interpretting t-values