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    Degrees of freedom, value of the test statistic, null hypotheses

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    The daily production rates of a sample of sixteen workers in a factory before and after a training program (which was shown to be effective in other plants provided the following results: Use alpha equal to .01
    Mean of the difference scores 5
    Standard deviation of the difference scores =8
    Is this problem, one tail, two tail upper tail, lower tail, a confidence interval, number of degrees of freedom ?
    Value of the test statistic is?
    one would reject or not reject the null hypotheses?

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    https://brainmass.com/statistics/hypothesis-testing/degrees-freedom-value-test-statistic-null-hypotheses-16575

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    The daily production rates of a sample of sixteen workers in a factory before and after a training program (which was shown to be effective in other plants ...

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    The degrees of freedom, value of a test statistics and null hypothesis is found.

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