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    Null hypotheses and sampling

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    1. The researchers found a significant difference between the two groups (control and treatment) for change in mobility of the women with osteoarthritis (OA) over 12 weeks with the results of F(1, 22) = 9.619, p = 0.005. Discuss each aspect of these results.

    Here F-statistic is significant, since the p-value is less than the significance level 0.05. Hence we can conclude that GI with PMR treatment has a significant effect on patients' mobility level.

    2. State the null hypothesis for the Baird and Sands (2004) study that focuses on the effect of the GI with PMR treatment on patients' mobility level. Should the null hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer.

    The null hypothesis tested is

    H0: There is no significant difference between the control and treatment groups for change in mobility of the women with osteoarthritis (OA) over 12 weeks (µ1 = µ2)

    The null hypothesis should be rejected for the ...

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    The following posting discusses null hypothese and sampling.

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