Show transcribed image text The degenerative disease osteoarthritis most frequendy affects weight-beering jsints such as the knee An article presented the following summary data on stance duratian(ms) for sernples of oolder and younger adults. Age Older Younger Sample Size 27 Sample Mean 504 780 Sample SD 119 71 Assume that hoth stance duration dis hutions are normal a) Calculate a 99% CI for true average stance duration among elderly indviduals. ma Interpret y ur gg% Cl. With 99%, confidence, we can say that the true average stance duration amonq elerly indivduals falls above the upper bound. With 99% confidence, we can say that the true averege stance duration emong elderly individuals fells tetween these values. With 999, confidence w car! say that the true average stance duration urmong-elderly individuals fells below the lower bound. With 99% confidence, we can 5sy that the true everege stence duration ermong elderly individuals fells outside these velues. (b) Cerry out a test of hypotheses at significance level 0.05 to decide whether true average stence duretion is larger smong elderly individuals then among younger individuals. (Ufar elderly individuels andfor younger individuals. State the relevant hypotheses. Celeulete the test statistic and determine the p. value.Round your test statistie to two decimal places and your Pvalue to three decimel places.) State the conclusion in the problem ㆅntext. Fail ta raject . Tha data suggests that the true avarage stance duration is larger among alderly individuals than among younge individuals. Rejact H. The data suggests thet the true average stance duration s larger amang elderly individuals than among younger individuals. Fail to roject Ho. Tha data does not suggest that tha trua average stance duration is larger among elderly individuals than amang younger ndividuals. Reject Ho. The data doas not suggest that the true averaga stance durction is larger among elderty individuals than amang younger Individuals.
The degenerative disease osteoarthritis most frequendy affects weight-beering jsints such as the knee An article presented the following summary data on stance duratian(ms) for sernples of oolder and younger adults. Age Older Younger Sample Size 27 Sample Mean 504 780 Sample SD 119 71 Assume that hoth stance duration dis hutions are normal a) Calculate a 99% CI for true average stance duration among elderly indviduals. ma Interpret y ur gg% Cl. With 99%, confidence, we can say that the true average stance duration amonq elerly indivduals falls above the upper bound. With 99% confidence, we can say that the true averege stance duration emong elderly individuals fells tetween these values. With 999, confidence w car! say that the true average stance duration urmong-elderly individuals fells below the lower bound. With 99% confidence, we can 5sy that the true everege stence duration ermong elderly individuals fells outside these velues. (b) Cerry out a test of hypotheses at significance level 0.05 to decide whether true average stence duretion is larger smong elderly individuals then among younger individuals. (Ufar elderly individuels andfor younger individuals. State the relevant hypotheses. Celeulete the test statistic and determine the p. value.Round your test statistie to two decimal places and your Pvalue to three decimel places.) State the conclusion in the problem ㆅntext. Fail ta raject . Tha data suggests that the true avarage stance duration is larger among alderly individuals than among younge individuals. Rejact H. The data suggests thet the true average stance duration s larger amang elderly individuals than among younger individuals. Fail to roject Ho. Tha data does not suggest that tha trua average stance duration is larger among elderly individuals than amang younger ndividuals. Reject Ho. The data doas not suggest that the true averaga stance durction is larger among elderty individuals than amang younger Individuals.
