Mathematics, 30.07.2021 04:00 lazavionadams81
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 Sample Size Sample Mean Sample SD
Older 29 809 116
Younger 18 770 71
Assume that both stance duration distributions are normal.
(a) Calculate a 99% CI for true average stance duration among elderly individuals. (Round your answers to one decimal place.)
ms
(b) Calculate the test statistic and determine the P-value. (Round your test statistic to one decimal place and your P-value to three decimal places.)
t =
P-value =
Answers: 3
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