Show transcribed image text The degenerative disease osteoarthritis most frequently affects weight-bearing joints such as the knee. An article presented the following summary data on stance duration (ms) for samples of both older and younger adults. Age Older Younger Sample Size Sample Mea Sample SD 26 19 808 790 115 72 Assume that both stance duration distributions are normal. (a) Calculate a 99% CI for true average stance duration among elderly individuals. )ms Interpret your 99% CL with 99% confidence, we can say that the true average stance duration among elderly individuals falls outside these values. 0 with 99% confidence, we can say that the true average stance duration among elderly individuals falls below the lower bound. With 99% confidence, we can say that the true average stance duration among elderly individuals falls between these values. with 99% confidence, we can say that the true average stance duration among elderly individuals falls above the upper bound (b Carry out test of hypotheses at significance level 0.05 to decide whether true individuals.) State the relevant hypotheses. erage stance duration s larger mong elderly ndividuals than among younger individuals. Use Î¼1 for elderly ndividuals and Î¼2 for younger 0 H0: Î¼1-Î¼2 = 0 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) -value State the conclusion in the problem context O Reject Ho. The data does not suggest that the true average stance duration is larger among elderly individuals than among younger individuals. Fail to reject Ho. The data does not suggest that the true average stance duration is larger among elderly individuals than among younger individuals Fail to reject Ho. The data suggests that the true average stance duration is larger among elderly individuals than among younger individuals. O Reject Ho. The data suggests that the true average stance duration is larger among elderly individuals than among younger individuals. You may need to use the appropriate table in the Appendix of Tables to answer this question.

The degenerative disease osteoarthritis most frequently affects weight-bearing joints such as the knee. An article presented the following summary data on stance duration (ms) for samples of both older and younger adults. Age Older Younger Sample Size Sample Mea Sample SD 26 19 808 790 115 72 Assume that both stance duration distributions are normal. (a) Calculate a 99% CI for true average stance duration among elderly individuals. )ms Interpret your 99% CL with 99% confidence, we can say that the true average stance duration among elderly individuals falls outside these values. 0 with 99% confidence, we can say that the true average stance duration among elderly individuals falls below the lower bound. With 99% confidence, we can say that the true average stance duration among elderly individuals falls between these values. with 99% confidence, we can say that the true average stance duration among elderly individuals falls above the upper bound (b Carry out test of hypotheses at significance level 0.05 to decide whether true individuals.) State the relevant hypotheses. erage stance duration s larger mong elderly ndividuals than among younger individuals. Use Î¼1 for elderly ndividuals and Î¼2 for younger 0 H0: Î¼1-Î¼2 = 0 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to three decimal places.) -value State the conclusion in the problem context O Reject Ho. The data does not suggest that the true average stance duration is larger among elderly individuals than among younger individuals. Fail to reject Ho. The data does not suggest that the true average stance duration is larger among elderly individuals than among younger individuals Fail to reject Ho. The data suggests that the true average stance duration is larger among elderly individuals than among younger individuals. O Reject Ho. The data suggests that the true average stance duration is larger among elderly individuals than among younger individuals. You may need to use the appropriate table in the Appendix of Tables to answer this question.